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Finding the Fourth Proportional to 28,310.68, 42,498.84 and 15,188.68

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Solution

The fourth proportional to 28,310.68, 42,498.84 and 15,188.68 is: 22,800.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.68 : 42,498.84 = 15,188.68 : x
  2. Step 2: Convert to fraction form
    28,310.68/42,498.84 = 15,188.68/x
  3. Step 3: Cross multiply
    28,310.68x = 42,498.84 × 15,188.68
  4. Step 4: Simplify right side
    28,310.68x = 645,501,281.13
  5. Step 5: Solve for x
    x = 645,501,281.13/28,310.68
  6. Step 6: Final answer
    x = 22,800.63

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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.