Home / 28,171.46-38,876.10-15,596.21

Finding the Fourth Proportional to 28,171.46, 38,876.10 and 15,596.21

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Solution

The fourth proportional to 28,171.46, 38,876.10 and 15,596.21 is: 21,522.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171.46 : 38,876.10 = 15,596.21 : x
  2. Step 2: Convert to fraction form
    28,171.46/38,876.10 = 15,596.21/x
  3. Step 3: Cross multiply
    28,171.46x = 38,876.10 × 15,596.21
  4. Step 4: Simplify right side
    28,171.46x = 606,319,819.58
  5. Step 5: Solve for x
    x = 606,319,819.58/28,171.46
  6. Step 6: Final answer
    x = 21,522.48

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Double scale
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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.