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Finding the Fourth Proportional to 28,097.92, 42,152.96 and 8,378.08

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Solution

The fourth proportional to 28,097.92, 42,152.96 and 8,378.08 is: 12,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,097.92 : 42,152.96 = 8,378.08 : x
  2. Step 2: Convert to fraction form
    28,097.92/42,152.96 = 8,378.08/x
  3. Step 3: Cross multiply
    28,097.92x = 42,152.96 × 8,378.08
  4. Step 4: Simplify right side
    28,097.92x = 353,160,871.12
  5. Step 5: Solve for x
    x = 353,160,871.12/28,097.92
  6. Step 6: Final answer
    x = 12,568.93

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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.