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Finding the Fourth Proportional to 15,126.21, 22,691.64 and 7,726.65

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Solution

The fourth proportional to 15,126.21, 22,691.64 and 7,726.65 is: 11,591.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.21 : 22,691.64 = 7,726.65 : x
  2. Step 2: Convert to fraction form
    15,126.21/22,691.64 = 7,726.65/x
  3. Step 3: Cross multiply
    15,126.21x = 22,691.64 × 7,726.65
  4. Step 4: Simplify right side
    15,126.21x = 175,330,360.21
  5. Step 5: Solve for x
    x = 175,330,360.21/15,126.21
  6. Step 6: Final answer
    x = 11,591.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.