Home / 21,063,010.30-31,594,515.45-18,228,658.30

Finding the Fourth Proportional to 21,063,010.30, 31,594,515.45 and 18,228,658.30

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Solution

The fourth proportional to 21,063,010.30, 31,594,515.45 and 18,228,658.30 is: 27,342,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063,010.30 : 31,594,515.45 = 18,228,658.30 : x
  2. Step 2: Convert to fraction form
    21,063,010.30/31,594,515.45 = 18,228,658.30/x
  3. Step 3: Cross multiply
    21,063,010.30x = 31,594,515.45 × 18,228,658.30
  4. Step 4: Simplify right side
    21,063,010.30x = 575,925,626,292,120.75
  5. Step 5: Solve for x
    x = 575,925,626,292,120.75/21,063,010.30
  6. Step 6: Final answer
    x = 27,342,987.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.