Home / 20,763.48-31,149.32-7,615.97

Finding the Fourth Proportional to 20,763.48, 31,149.32 and 7,615.97

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Solution

The fourth proportional to 20,763.48, 31,149.32 and 7,615.97 is: 11,425.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.48 : 31,149.32 = 7,615.97 : x
  2. Step 2: Convert to fraction form
    20,763.48/31,149.32 = 7,615.97/x
  3. Step 3: Cross multiply
    20,763.48x = 31,149.32 × 7,615.97
  4. Step 4: Simplify right side
    20,763.48x = 237,232,149.93
  5. Step 5: Solve for x
    x = 237,232,149.93/20,763.48
  6. Step 6: Final answer
    x = 11,425.45

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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.