Home / 28,092.70-38,651.61-21,338.92

Finding the Fourth Proportional to 28,092.70, 38,651.61 and 21,338.92

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Solution

The fourth proportional to 28,092.70, 38,651.61 and 21,338.92 is: 29,359.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,092.70 : 38,651.61 = 21,338.92 : x
  2. Step 2: Convert to fraction form
    28,092.70/38,651.61 = 21,338.92/x
  3. Step 3: Cross multiply
    28,092.70x = 38,651.61 × 21,338.92
  4. Step 4: Simplify right side
    28,092.70x = 824,783,613.66
  5. Step 5: Solve for x
    x = 824,783,613.66/28,092.70
  6. Step 6: Final answer
    x = 29,359.36

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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.