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Finding the Fourth Proportional to 28,507.92, 42,702.12 and 18,067.92

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Solution

The fourth proportional to 28,507.92, 42,702.12 and 18,067.92 is: 27,064.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.92 : 42,702.12 = 18,067.92 : x
  2. Step 2: Convert to fraction form
    28,507.92/42,702.12 = 18,067.92/x
  3. Step 3: Cross multiply
    28,507.92x = 42,702.12 × 18,067.92
  4. Step 4: Simplify right side
    28,507.92x = 771,538,487.99
  5. Step 5: Solve for x
    x = 771,538,487.99/28,507.92
  6. Step 6: Final answer
    x = 27,064.00

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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.