Home / 23,117.40-31,905.90-13,691.16

Finding the Fourth Proportional to 23,117.40, 31,905.90 and 13,691.16

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Solution

The fourth proportional to 23,117.40, 31,905.90 and 13,691.16 is: 18,896.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,117.40 : 31,905.90 = 13,691.16 : x
  2. Step 2: Convert to fraction form
    23,117.40/31,905.90 = 13,691.16/x
  3. Step 3: Cross multiply
    23,117.40x = 31,905.90 × 13,691.16
  4. Step 4: Simplify right side
    23,117.40x = 436,828,781.84
  5. Step 5: Solve for x
    x = 436,828,781.84/23,117.40
  6. Step 6: Final answer
    x = 18,896.10

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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.