Home / 28,155.24-42,203.34-11,508.84

Finding the Fourth Proportional to 28,155.24, 42,203.34 and 11,508.84

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Solution

The fourth proportional to 28,155.24, 42,203.34 and 11,508.84 is: 17,251.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.24 : 42,203.34 = 11,508.84 : x
  2. Step 2: Convert to fraction form
    28,155.24/42,203.34 = 11,508.84/x
  3. Step 3: Cross multiply
    28,155.24x = 42,203.34 × 11,508.84
  4. Step 4: Simplify right side
    28,155.24x = 485,711,487.53
  5. Step 5: Solve for x
    x = 485,711,487.53/28,155.24
  6. Step 6: Final answer
    x = 17,251.19

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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.