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Finding the Fourth Proportional to 12,332.80, 18,460.80 and 9,721.60

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Solution

The fourth proportional to 12,332.80, 18,460.80 and 9,721.60 is: 14,552.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,332.80 : 18,460.80 = 9,721.60 : x
  2. Step 2: Convert to fraction form
    12,332.80/18,460.80 = 9,721.60/x
  3. Step 3: Cross multiply
    12,332.80x = 18,460.80 × 9,721.60
  4. Step 4: Simplify right side
    12,332.80x = 179,468,513.28
  5. Step 5: Solve for x
    x = 179,468,513.28/12,332.80
  6. Step 6: Final answer
    x = 14,552.13

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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.