Home / 38,307.12-52,868.64-21,540

Finding the Fourth Proportional to 38,307.12, 52,868.64 and 21,540

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Solution

The fourth proportional to 38,307.12, 52,868.64 and 21,540 is: 29,727.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,307.12 : 52,868.64 = 21,540 : x
  2. Step 2: Convert to fraction form
    38,307.12/52,868.64 = 21,540/x
  3. Step 3: Cross multiply
    38,307.12x = 52,868.64 × 21,540
  4. Step 4: Simplify right side
    38,307.12x = 1,138,790,505.60
  5. Step 5: Solve for x
    x = 1,138,790,505.60/38,307.12
  6. Step 6: Final answer
    x = 29,727.91

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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.