Home / 22,785.90-31,447.25-13,354.45

Finding the Fourth Proportional to 22,785.90, 31,447.25 and 13,354.45

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Solution

The fourth proportional to 22,785.90, 31,447.25 and 13,354.45 is: 18,430.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,785.90 : 31,447.25 = 13,354.45 : x
  2. Step 2: Convert to fraction form
    22,785.90/31,447.25 = 13,354.45/x
  3. Step 3: Cross multiply
    22,785.90x = 31,447.25 × 13,354.45
  4. Step 4: Simplify right side
    22,785.90x = 419,960,727.76
  5. Step 5: Solve for x
    x = 419,960,727.76/22,785.90
  6. Step 6: Final answer
    x = 18,430.73

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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.