Home / 29,177.28-43,690.32-21,247.20

Finding the Fourth Proportional to 29,177.28, 43,690.32 and 21,247.20

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Solution

The fourth proportional to 29,177.28, 43,690.32 and 21,247.20 is: 31,815.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,177.28 : 43,690.32 = 21,247.20 : x
  2. Step 2: Convert to fraction form
    29,177.28/43,690.32 = 21,247.20/x
  3. Step 3: Cross multiply
    29,177.28x = 43,690.32 × 21,247.20
  4. Step 4: Simplify right side
    29,177.28x = 928,296,967.10
  5. Step 5: Solve for x
    x = 928,296,967.10/29,177.28
  6. Step 6: Final answer
    x = 31,815.75

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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.