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Finding the Fourth Proportional to 19,957, 29,935.65 and 8,860.71

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Solution

The fourth proportional to 19,957, 29,935.65 and 8,860.71 is: 13,291.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,957 : 29,935.65 = 8,860.71 : x
  2. Step 2: Convert to fraction form
    19,957/29,935.65 = 8,860.71/x
  3. Step 3: Cross multiply
    19,957x = 29,935.65 × 8,860.71
  4. Step 4: Simplify right side
    19,957x = 265,251,113.31
  5. Step 5: Solve for x
    x = 265,251,113.31/19,957
  6. Step 6: Final answer
    x = 13,291.13

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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.