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Finding the Fourth Proportional to 28,497.60, 42,755.02 and 8,507.75

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Solution

The fourth proportional to 28,497.60, 42,755.02 and 8,507.75 is: 12,764.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,497.60 : 42,755.02 = 8,507.75 : x
  2. Step 2: Convert to fraction form
    28,497.60/42,755.02 = 8,507.75/x
  3. Step 3: Cross multiply
    28,497.60x = 42,755.02 × 8,507.75
  4. Step 4: Simplify right side
    28,497.60x = 363,748,786.36
  5. Step 5: Solve for x
    x = 363,748,786.36/28,497.60
  6. Step 6: Final answer
    x = 12,764.19

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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.