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Finding the Fourth Proportional to 18,329.78, 25,295.14 and 9,946.28

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Solution

The fourth proportional to 18,329.78, 25,295.14 and 9,946.28 is: 13,725.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,329.78 : 25,295.14 = 9,946.28 : x
  2. Step 2: Convert to fraction form
    18,329.78/25,295.14 = 9,946.28/x
  3. Step 3: Cross multiply
    18,329.78x = 25,295.14 × 9,946.28
  4. Step 4: Simplify right side
    18,329.78x = 251,592,545.08
  5. Step 5: Solve for x
    x = 251,592,545.08/18,329.78
  6. Step 6: Final answer
    x = 13,725.89

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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.