Home / 11,380.23-15,697.38-7,551.78

Finding the Fourth Proportional to 11,380.23, 15,697.38 and 7,551.78

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Solution

The fourth proportional to 11,380.23, 15,697.38 and 7,551.78 is: 10,416.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,380.23 : 15,697.38 = 7,551.78 : x
  2. Step 2: Convert to fraction form
    11,380.23/15,697.38 = 7,551.78/x
  3. Step 3: Cross multiply
    11,380.23x = 15,697.38 × 7,551.78
  4. Step 4: Simplify right side
    11,380.23x = 118,543,160.34
  5. Step 5: Solve for x
    x = 118,543,160.34/11,380.23
  6. Step 6: Final answer
    x = 10,416.59

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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.