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Finding the Fourth Proportional to 28,053.76, 42,073.36 and 8,327.68

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Solution

The fourth proportional to 28,053.76, 42,073.36 and 8,327.68 is: 12,489.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.76 : 42,073.36 = 8,327.68 : x
  2. Step 2: Convert to fraction form
    28,053.76/42,073.36 = 8,327.68/x
  3. Step 3: Cross multiply
    28,053.76x = 42,073.36 × 8,327.68
  4. Step 4: Simplify right side
    28,053.76x = 350,373,478.60
  5. Step 5: Solve for x
    x = 350,373,478.60/28,053.76
  6. Step 6: Final answer
    x = 12,489.36

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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.