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Finding the Fourth Proportional to 15,000.32, 20,687.00 and 12,490.74

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Solution

The fourth proportional to 15,000.32, 20,687.00 and 12,490.74 is: 17,226.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.32 : 20,687.00 = 12,490.74 : x
  2. Step 2: Convert to fraction form
    15,000.32/20,687.00 = 12,490.74/x
  3. Step 3: Cross multiply
    15,000.32x = 20,687.00 × 12,490.74
  4. Step 4: Simplify right side
    15,000.32x = 258,395,875.93
  5. Step 5: Solve for x
    x = 258,395,875.93/15,000.32
  6. Step 6: Final answer
    x = 17,226.02

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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.