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Finding the Fourth Proportional to 28,330.60, 42,498.57 and 8,340.11

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Solution

The fourth proportional to 28,330.60, 42,498.57 and 8,340.11 is: 12,510.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.60 : 42,498.57 = 8,340.11 : x
  2. Step 2: Convert to fraction form
    28,330.60/42,498.57 = 8,340.11/x
  3. Step 3: Cross multiply
    28,330.60x = 42,498.57 × 8,340.11
  4. Step 4: Simplify right side
    28,330.60x = 354,442,748.64
  5. Step 5: Solve for x
    x = 354,442,748.64/28,330.60
  6. Step 6: Final answer
    x = 12,510.95

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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.