Home / 19,863.72-29,781.15-9,328.32

Finding the Fourth Proportional to 19,863.72, 29,781.15 and 9,328.32

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Solution

The fourth proportional to 19,863.72, 29,781.15 and 9,328.32 is: 13,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,863.72 : 29,781.15 = 9,328.32 : x
  2. Step 2: Convert to fraction form
    19,863.72/29,781.15 = 9,328.32/x
  3. Step 3: Cross multiply
    19,863.72x = 29,781.15 × 9,328.32
  4. Step 4: Simplify right side
    19,863.72x = 277,808,097.17
  5. Step 5: Solve for x
    x = 277,808,097.17/19,863.72
  6. Step 6: Final answer
    x = 13,985.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.