Home / 19,781.17-29,665.61-6,630.47

Finding the Fourth Proportional to 19,781.17, 29,665.61 and 6,630.47

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Solution

The fourth proportional to 19,781.17, 29,665.61 and 6,630.47 is: 9,943.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,781.17 : 29,665.61 = 6,630.47 : x
  2. Step 2: Convert to fraction form
    19,781.17/29,665.61 = 6,630.47/x
  3. Step 3: Cross multiply
    19,781.17x = 29,665.61 × 6,630.47
  4. Step 4: Simplify right side
    19,781.17x = 196,696,891.77
  5. Step 5: Solve for x
    x = 196,696,891.77/19,781.17
  6. Step 6: Final answer
    x = 9,943.64

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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.