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Finding the Fourth Proportional to 15,562.64, 21,476.46 and 8,489.08

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Solution

The fourth proportional to 15,562.64, 21,476.46 and 8,489.08 is: 11,714.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,562.64 : 21,476.46 = 8,489.08 : x
  2. Step 2: Convert to fraction form
    15,562.64/21,476.46 = 8,489.08/x
  3. Step 3: Cross multiply
    15,562.64x = 21,476.46 × 8,489.08
  4. Step 4: Simplify right side
    15,562.64x = 182,315,387.06
  5. Step 5: Solve for x
    x = 182,315,387.06/15,562.64
  6. Step 6: Final answer
    x = 11,714.94

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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.