Home / 29,126.20-43,689.30-28,640.20

Finding the Fourth Proportional to 29,126.20, 43,689.30 and 28,640.20

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Solution

The fourth proportional to 29,126.20, 43,689.30 and 28,640.20 is: 42,960.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,126.20 : 43,689.30 = 28,640.20 : x
  2. Step 2: Convert to fraction form
    29,126.20/43,689.30 = 28,640.20/x
  3. Step 3: Cross multiply
    29,126.20x = 43,689.30 × 28,640.20
  4. Step 4: Simplify right side
    29,126.20x = 1,251,270,289.86
  5. Step 5: Solve for x
    x = 1,251,270,289.86/29,126.20
  6. Step 6: Final answer
    x = 42,960.30

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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.