Home / 38,178.26-52,685-21,182.43

Finding the Fourth Proportional to 38,178.26, 52,685 and 21,182.43

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Solution

The fourth proportional to 38,178.26, 52,685 and 21,182.43 is: 29,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,178.26 : 52,685 = 21,182.43 : x
  2. Step 2: Convert to fraction form
    38,178.26/52,685 = 21,182.43/x
  3. Step 3: Cross multiply
    38,178.26x = 52,685 × 21,182.43
  4. Step 4: Simplify right side
    38,178.26x = 1,115,996,324.55
  5. Step 5: Solve for x
    x = 1,115,996,324.55/38,178.26
  6. Step 6: Final answer
    x = 29,231.20

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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.