Home / 28,286.10-42,407.55-17,190.42

Finding the Fourth Proportional to 28,286.10, 42,407.55 and 17,190.42

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Solution

The fourth proportional to 28,286.10, 42,407.55 and 17,190.42 is: 25,772.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.10 : 42,407.55 = 17,190.42 : x
  2. Step 2: Convert to fraction form
    28,286.10/42,407.55 = 17,190.42/x
  3. Step 3: Cross multiply
    28,286.10x = 42,407.55 × 17,190.42
  4. Step 4: Simplify right side
    28,286.10x = 729,003,595.67
  5. Step 5: Solve for x
    x = 729,003,595.67/28,286.10
  6. Step 6: Final answer
    x = 25,772.50

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Double scale
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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.