Home / 21,044.40-31,566.60-11,809.20

Finding the Fourth Proportional to 21,044.40, 31,566.60 and 11,809.20

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Solution

The fourth proportional to 21,044.40, 31,566.60 and 11,809.20 is: 17,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,044.40 : 31,566.60 = 11,809.20 : x
  2. Step 2: Convert to fraction form
    21,044.40/31,566.60 = 11,809.20/x
  3. Step 3: Cross multiply
    21,044.40x = 31,566.60 × 11,809.20
  4. Step 4: Simplify right side
    21,044.40x = 372,776,292.72
  5. Step 5: Solve for x
    x = 372,776,292.72/21,044.40
  6. Step 6: Final answer
    x = 17,713.80

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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.