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Finding the Fourth Proportional to 12,863.38, 19,302.36 and 8,482.90

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Solution

The fourth proportional to 12,863.38, 19,302.36 and 8,482.90 is: 12,729.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,863.38 : 19,302.36 = 8,482.90 : x
  2. Step 2: Convert to fraction form
    12,863.38/19,302.36 = 8,482.90/x
  3. Step 3: Cross multiply
    12,863.38x = 19,302.36 × 8,482.90
  4. Step 4: Simplify right side
    12,863.38x = 163,739,989.64
  5. Step 5: Solve for x
    x = 163,739,989.64/12,863.38
  6. Step 6: Final answer
    x = 12,729.16

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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.