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Finding the Fourth Proportional to 15,654.33, 21,602.97 and 8,580.74

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Solution

The fourth proportional to 15,654.33, 21,602.97 and 8,580.74 is: 11,841.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,654.33 : 21,602.97 = 8,580.74 : x
  2. Step 2: Convert to fraction form
    15,654.33/21,602.97 = 8,580.74/x
  3. Step 3: Cross multiply
    15,654.33x = 21,602.97 × 8,580.74
  4. Step 4: Simplify right side
    15,654.33x = 185,369,360.78
  5. Step 5: Solve for x
    x = 185,369,360.78/15,654.33
  6. Step 6: Final answer
    x = 11,841.41

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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.