Home / 28,287.20-42,402.98-12,500.84

Finding the Fourth Proportional to 28,287.20, 42,402.98 and 12,500.84

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Solution

The fourth proportional to 28,287.20, 42,402.98 and 12,500.84 is: 18,738.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,287.20 : 42,402.98 = 12,500.84 : x
  2. Step 2: Convert to fraction form
    28,287.20/42,402.98 = 12,500.84/x
  3. Step 3: Cross multiply
    28,287.20x = 42,402.98 × 12,500.84
  4. Step 4: Simplify right side
    28,287.20x = 530,072,868.50
  5. Step 5: Solve for x
    x = 530,072,868.50/28,287.20
  6. Step 6: Final answer
    x = 18,738.97

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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.