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Finding the Fourth Proportional to 10,112.64, 15,163.80 and 7,590.80

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Solution

The fourth proportional to 10,112.64, 15,163.80 and 7,590.80 is: 11,382.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,112.64 : 15,163.80 = 7,590.80 : x
  2. Step 2: Convert to fraction form
    10,112.64/15,163.80 = 7,590.80/x
  3. Step 3: Cross multiply
    10,112.64x = 15,163.80 × 7,590.80
  4. Step 4: Simplify right side
    10,112.64x = 115,105,373.04
  5. Step 5: Solve for x
    x = 115,105,373.04/10,112.64
  6. Step 6: Final answer
    x = 11,382.33

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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.