Home / 10,147.26-15,147.40-8,769.44

Finding the Fourth Proportional to 10,147.26, 15,147.40 and 8,769.44

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Solution

The fourth proportional to 10,147.26, 15,147.40 and 8,769.44 is: 13,090.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,147.26 : 15,147.40 = 8,769.44 : x
  2. Step 2: Convert to fraction form
    10,147.26/15,147.40 = 8,769.44/x
  3. Step 3: Cross multiply
    10,147.26x = 15,147.40 × 8,769.44
  4. Step 4: Simplify right side
    10,147.26x = 132,834,215.46
  5. Step 5: Solve for x
    x = 132,834,215.46/10,147.26
  6. Step 6: Final answer
    x = 13,090.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.