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Finding the Fourth Proportional to 15,170.31, 20,926.76 and 9,503.84

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Solution

The fourth proportional to 15,170.31, 20,926.76 and 9,503.84 is: 13,110.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,170.31 : 20,926.76 = 9,503.84 : x
  2. Step 2: Convert to fraction form
    15,170.31/20,926.76 = 9,503.84/x
  3. Step 3: Cross multiply
    15,170.31x = 20,926.76 × 9,503.84
  4. Step 4: Simplify right side
    15,170.31x = 198,884,426.61
  5. Step 5: Solve for x
    x = 198,884,426.61/15,170.31
  6. Step 6: Final answer
    x = 13,110.11

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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.