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Finding the Fourth Proportional to 10,445.76, 15,761.79 and 10,040.76

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Solution

The fourth proportional to 10,445.76, 15,761.79 and 10,040.76 is: 15,150.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,445.76 : 15,761.79 = 10,040.76 : x
  2. Step 2: Convert to fraction form
    10,445.76/15,761.79 = 10,040.76/x
  3. Step 3: Cross multiply
    10,445.76x = 15,761.79 × 10,040.76
  4. Step 4: Simplify right side
    10,445.76x = 158,260,350.56
  5. Step 5: Solve for x
    x = 158,260,350.56/10,445.76
  6. Step 6: Final answer
    x = 15,150.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.