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Finding the Fourth Proportional to 19,000.17, 28,482.03 and 12,431.88

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Solution

The fourth proportional to 19,000.17, 28,482.03 and 12,431.88 is: 18,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,000.17 : 28,482.03 = 12,431.88 : x
  2. Step 2: Convert to fraction form
    19,000.17/28,482.03 = 12,431.88/x
  3. Step 3: Cross multiply
    19,000.17x = 28,482.03 × 12,431.88
  4. Step 4: Simplify right side
    19,000.17x = 354,085,179.12
  5. Step 5: Solve for x
    x = 354,085,179.12/19,000.17
  6. Step 6: Final answer
    x = 18,635.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.