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Finding the Fourth Proportional to 15,008.31, 20,714.04 and 8,724.33

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Solution

The fourth proportional to 15,008.31, 20,714.04 and 8,724.33 is: 12,041.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,008.31 : 20,714.04 = 8,724.33 : x
  2. Step 2: Convert to fraction form
    15,008.31/20,714.04 = 8,724.33/x
  3. Step 3: Cross multiply
    15,008.31x = 20,714.04 × 8,724.33
  4. Step 4: Simplify right side
    15,008.31x = 180,716,120.59
  5. Step 5: Solve for x
    x = 180,716,120.59/15,008.31
  6. Step 6: Final answer
    x = 12,041.07

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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.