Home / 28,211.91-38,932.44-15,636.66

Finding the Fourth Proportional to 28,211.91, 38,932.44 and 15,636.66

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Solution

The fourth proportional to 28,211.91, 38,932.44 and 15,636.66 is: 21,578.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.91 : 38,932.44 = 15,636.66 : x
  2. Step 2: Convert to fraction form
    28,211.91/38,932.44 = 15,636.66/x
  3. Step 3: Cross multiply
    28,211.91x = 38,932.44 × 15,636.66
  4. Step 4: Simplify right side
    28,211.91x = 608,773,122.62
  5. Step 5: Solve for x
    x = 608,773,122.62/28,211.91
  6. Step 6: Final answer
    x = 21,578.59

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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.