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Finding the Fourth Proportional to 10,892.68, 15,028.03 and 8,065.98

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Solution

The fourth proportional to 10,892.68, 15,028.03 and 8,065.98 is: 11,128.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,892.68 : 15,028.03 = 8,065.98 : x
  2. Step 2: Convert to fraction form
    10,892.68/15,028.03 = 8,065.98/x
  3. Step 3: Cross multiply
    10,892.68x = 15,028.03 × 8,065.98
  4. Step 4: Simplify right side
    10,892.68x = 121,215,799.50
  5. Step 5: Solve for x
    x = 121,215,799.50/10,892.68
  6. Step 6: Final answer
    x = 11,128.19

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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.