Home / 28,123.38-42,170.85-9,396.90

Finding the Fourth Proportional to 28,123.38, 42,170.85 and 9,396.90

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Solution

The fourth proportional to 28,123.38, 42,170.85 and 9,396.90 is: 14,090.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.38 : 42,170.85 = 9,396.90 : x
  2. Step 2: Convert to fraction form
    28,123.38/42,170.85 = 9,396.90/x
  3. Step 3: Cross multiply
    28,123.38x = 42,170.85 × 9,396.90
  4. Step 4: Simplify right side
    28,123.38x = 396,275,260.37
  5. Step 5: Solve for x
    x = 396,275,260.37/28,123.38
  6. Step 6: Final answer
    x = 14,090.60

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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.