Home / 29,178.35-43,778.56-11,421.70

Finding the Fourth Proportional to 29,178.35, 43,778.56 and 11,421.70

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Solution

The fourth proportional to 29,178.35, 43,778.56 and 11,421.70 is: 17,136.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,178.35 : 43,778.56 = 11,421.70 : x
  2. Step 2: Convert to fraction form
    29,178.35/43,778.56 = 11,421.70/x
  3. Step 3: Cross multiply
    29,178.35x = 43,778.56 × 11,421.70
  4. Step 4: Simplify right side
    29,178.35x = 500,025,585.29
  5. Step 5: Solve for x
    x = 500,025,585.29/29,178.35
  6. Step 6: Final answer
    x = 17,136.87

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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.