Home / 10,989.44-15,169.92-7,637.12

Finding the Fourth Proportional to 10,989.44, 15,169.92 and 7,637.12

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Solution

The fourth proportional to 10,989.44, 15,169.92 and 7,637.12 is: 10,542.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.44 : 15,169.92 = 7,637.12 : x
  2. Step 2: Convert to fraction form
    10,989.44/15,169.92 = 7,637.12/x
  3. Step 3: Cross multiply
    10,989.44x = 15,169.92 × 7,637.12
  4. Step 4: Simplify right side
    10,989.44x = 115,854,499.43
  5. Step 5: Solve for x
    x = 115,854,499.43/10,989.44
  6. Step 6: Final answer
    x = 10,542.35

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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.