Home / 29,147.20-40,187.28-21,582.88

Finding the Fourth Proportional to 29,147.20, 40,187.28 and 21,582.88

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Solution

The fourth proportional to 29,147.20, 40,187.28 and 21,582.88 is: 29,757.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,147.20 : 40,187.28 = 21,582.88 : x
  2. Step 2: Convert to fraction form
    29,147.20/40,187.28 = 21,582.88/x
  3. Step 3: Cross multiply
    29,147.20x = 40,187.28 × 21,582.88
  4. Step 4: Simplify right side
    29,147.20x = 867,357,241.77
  5. Step 5: Solve for x
    x = 867,357,241.77/29,147.20
  6. Step 6: Final answer
    x = 29,757.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.