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Finding the Fourth Proportional to 15,115.10, 20,844.89 and 9,448.04

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Solution

The fourth proportional to 15,115.10, 20,844.89 and 9,448.04 is: 13,029.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,115.10 : 20,844.89 = 9,448.04 : x
  2. Step 2: Convert to fraction form
    15,115.10/20,844.89 = 9,448.04/x
  3. Step 3: Cross multiply
    15,115.10x = 20,844.89 × 9,448.04
  4. Step 4: Simplify right side
    15,115.10x = 196,943,354.52
  5. Step 5: Solve for x
    x = 196,943,354.52/15,115.10
  6. Step 6: Final answer
    x = 13,029.58

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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.