Home / 28,147.70-42,221.55-7,373.30

Finding the Fourth Proportional to 28,147.70, 42,221.55 and 7,373.30

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Solution

The fourth proportional to 28,147.70, 42,221.55 and 7,373.30 is: 11,059.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.70 : 42,221.55 = 7,373.30 : x
  2. Step 2: Convert to fraction form
    28,147.70/42,221.55 = 7,373.30/x
  3. Step 3: Cross multiply
    28,147.70x = 42,221.55 × 7,373.30
  4. Step 4: Simplify right side
    28,147.70x = 311,312,154.62
  5. Step 5: Solve for x
    x = 311,312,154.62/28,147.70
  6. Step 6: Final answer
    x = 11,059.95

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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.