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Finding the Fourth Proportional to 28,373.12, 42,562.86 and 9,655.12

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Solution

The fourth proportional to 28,373.12, 42,562.86 and 9,655.12 is: 14,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,373.12 : 42,562.86 = 9,655.12 : x
  2. Step 2: Convert to fraction form
    28,373.12/42,562.86 = 9,655.12/x
  3. Step 3: Cross multiply
    28,373.12x = 42,562.86 × 9,655.12
  4. Step 4: Simplify right side
    28,373.12x = 410,949,520.84
  5. Step 5: Solve for x
    x = 410,949,520.84/28,373.12
  6. Step 6: Final answer
    x = 14,483.76

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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.