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Finding the Fourth Proportional to 18,107.55, 25,000.11 and 14,758.40

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Solution

The fourth proportional to 18,107.55, 25,000.11 and 14,758.40 is: 20,376.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,107.55 : 25,000.11 = 14,758.40 : x
  2. Step 2: Convert to fraction form
    18,107.55/25,000.11 = 14,758.40/x
  3. Step 3: Cross multiply
    18,107.55x = 25,000.11 × 14,758.40
  4. Step 4: Simplify right side
    18,107.55x = 368,961,685.92
  5. Step 5: Solve for x
    x = 368,961,685.92/18,107.55
  6. Step 6: Final answer
    x = 20,376.12

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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.