Home / 22,815.09-31,487.81-13,384.53

Finding the Fourth Proportional to 22,815.09, 31,487.81 and 13,384.53

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Solution

The fourth proportional to 22,815.09, 31,487.81 and 13,384.53 is: 18,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,815.09 : 31,487.81 = 13,384.53 : x
  2. Step 2: Convert to fraction form
    22,815.09/31,487.81 = 13,384.53/x
  3. Step 3: Cross multiply
    22,815.09x = 31,487.81 × 13,384.53
  4. Step 4: Simplify right side
    22,815.09x = 421,449,470.66
  5. Step 5: Solve for x
    x = 421,449,470.66/22,815.09
  6. Step 6: Final answer
    x = 18,472.40

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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.