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Finding the Fourth Proportional to 15,149.98, 22,720.02 and 5,287.06

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Solution

The fourth proportional to 15,149.98, 22,720.02 and 5,287.06 is: 7,928.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,149.98 : 22,720.02 = 5,287.06 : x
  2. Step 2: Convert to fraction form
    15,149.98/22,720.02 = 5,287.06/x
  3. Step 3: Cross multiply
    15,149.98x = 22,720.02 × 5,287.06
  4. Step 4: Simplify right side
    15,149.98x = 120,122,108.94
  5. Step 5: Solve for x
    x = 120,122,108.94/15,149.98
  6. Step 6: Final answer
    x = 7,928.86

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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.