Home / 22,781.13-31,440.69-13,349.69

Finding the Fourth Proportional to 22,781.13, 31,440.69 and 13,349.69

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Solution

The fourth proportional to 22,781.13, 31,440.69 and 13,349.69 is: 18,424.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,781.13 : 31,440.69 = 13,349.69 : x
  2. Step 2: Convert to fraction form
    22,781.13/31,440.69 = 13,349.69/x
  3. Step 3: Cross multiply
    22,781.13x = 31,440.69 × 13,349.69
  4. Step 4: Simplify right side
    22,781.13x = 419,723,307.68
  5. Step 5: Solve for x
    x = 419,723,307.68/22,781.13
  6. Step 6: Final answer
    x = 18,424.17

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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.