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Finding the Fourth Proportional to 15,109.97, 20,845.06 and 10,069.28

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Solution

The fourth proportional to 15,109.97, 20,845.06 and 10,069.28 is: 13,891.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.97 : 20,845.06 = 10,069.28 : x
  2. Step 2: Convert to fraction form
    15,109.97/20,845.06 = 10,069.28/x
  3. Step 3: Cross multiply
    15,109.97x = 20,845.06 × 10,069.28
  4. Step 4: Simplify right side
    15,109.97x = 209,894,745.76
  5. Step 5: Solve for x
    x = 209,894,745.76/15,109.97
  6. Step 6: Final answer
    x = 13,891.14

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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.