Home / 23,118.30-31,901.32-13,557.18

Finding the Fourth Proportional to 23,118.30, 31,901.32 and 13,557.18

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Solution

The fourth proportional to 23,118.30, 31,901.32 and 13,557.18 is: 18,707.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,118.30 : 31,901.32 = 13,557.18 : x
  2. Step 2: Convert to fraction form
    23,118.30/31,901.32 = 13,557.18/x
  3. Step 3: Cross multiply
    23,118.30x = 31,901.32 × 13,557.18
  4. Step 4: Simplify right side
    23,118.30x = 432,491,964.70
  5. Step 5: Solve for x
    x = 432,491,964.70/23,118.30
  6. Step 6: Final answer
    x = 18,707.78

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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.