Home / 20,187.39-30,276.42-7,702.86

Finding the Fourth Proportional to 20,187.39, 30,276.42 and 7,702.86

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Solution

The fourth proportional to 20,187.39, 30,276.42 and 7,702.86 is: 11,552.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.39 : 30,276.42 = 7,702.86 : x
  2. Step 2: Convert to fraction form
    20,187.39/30,276.42 = 7,702.86/x
  3. Step 3: Cross multiply
    20,187.39x = 30,276.42 × 7,702.86
  4. Step 4: Simplify right side
    20,187.39x = 233,215,024.56
  5. Step 5: Solve for x
    x = 233,215,024.56/20,187.39
  6. Step 6: Final answer
    x = 11,552.51

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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.