Home / 28,220.18-42,330.87-9,500.78

Finding the Fourth Proportional to 28,220.18, 42,330.87 and 9,500.78

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Solution

The fourth proportional to 28,220.18, 42,330.87 and 9,500.78 is: 14,251.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.18 : 42,330.87 = 9,500.78 : x
  2. Step 2: Convert to fraction form
    28,220.18/42,330.87 = 9,500.78/x
  3. Step 3: Cross multiply
    28,220.18x = 42,330.87 × 9,500.78
  4. Step 4: Simplify right side
    28,220.18x = 402,176,283.08
  5. Step 5: Solve for x
    x = 402,176,283.08/28,220.18
  6. Step 6: Final answer
    x = 14,251.37

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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.