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Finding the Fourth Proportional to 15,071.41, 20,799.05 and 9,101.89

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Solution

The fourth proportional to 15,071.41, 20,799.05 and 9,101.89 is: 12,560.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.41 : 20,799.05 = 9,101.89 : x
  2. Step 2: Convert to fraction form
    15,071.41/20,799.05 = 9,101.89/x
  3. Step 3: Cross multiply
    15,071.41x = 20,799.05 × 9,101.89
  4. Step 4: Simplify right side
    15,071.41x = 189,310,515.70
  5. Step 5: Solve for x
    x = 189,310,515.70/15,071.41
  6. Step 6: Final answer
    x = 12,560.91

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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.