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Finding the Fourth Proportional to 28,588.59, 42,887.03 and 8,868.73

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Solution

The fourth proportional to 28,588.59, 42,887.03 and 8,868.73 is: 13,304.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,588.59 : 42,887.03 = 8,868.73 : x
  2. Step 2: Convert to fraction form
    28,588.59/42,887.03 = 8,868.73/x
  3. Step 3: Cross multiply
    28,588.59x = 42,887.03 × 8,868.73
  4. Step 4: Simplify right side
    28,588.59x = 380,353,489.57
  5. Step 5: Solve for x
    x = 380,353,489.57/28,588.59
  6. Step 6: Final answer
    x = 13,304.38

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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.