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Finding the Fourth Proportional to 15,654.11, 21,602.43 and 8,580.54

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Solution

The fourth proportional to 15,654.11, 21,602.43 and 8,580.54 is: 11,841.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,654.11 : 21,602.43 = 8,580.54 : x
  2. Step 2: Convert to fraction form
    15,654.11/21,602.43 = 8,580.54/x
  3. Step 3: Cross multiply
    15,654.11x = 21,602.43 × 8,580.54
  4. Step 4: Simplify right side
    15,654.11x = 185,360,514.71
  5. Step 5: Solve for x
    x = 185,360,514.71/15,654.11
  6. Step 6: Final answer
    x = 11,841.02

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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.