Home / 22,519.91-31,044.53-15,785.21

Finding the Fourth Proportional to 22,519.91, 31,044.53 and 15,785.21

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Solution

The fourth proportional to 22,519.91, 31,044.53 and 15,785.21 is: 21,760.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,519.91 : 31,044.53 = 15,785.21 : x
  2. Step 2: Convert to fraction form
    22,519.91/31,044.53 = 15,785.21/x
  3. Step 3: Cross multiply
    22,519.91x = 31,044.53 × 15,785.21
  4. Step 4: Simplify right side
    22,519.91x = 490,044,346.48
  5. Step 5: Solve for x
    x = 490,044,346.48/22,519.91
  6. Step 6: Final answer
    x = 21,760.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.