Home / 11,387.52-15,715.62-6,912.54

Finding the Fourth Proportional to 11,387.52, 15,715.62 and 6,912.54

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Solution

The fourth proportional to 11,387.52, 15,715.62 and 6,912.54 is: 9,539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.52 : 15,715.62 = 6,912.54 : x
  2. Step 2: Convert to fraction form
    11,387.52/15,715.62 = 6,912.54/x
  3. Step 3: Cross multiply
    11,387.52x = 15,715.62 × 6,912.54
  4. Step 4: Simplify right side
    11,387.52x = 108,634,851.87
  5. Step 5: Solve for x
    x = 108,634,851.87/11,387.52
  6. Step 6: Final answer
    x = 9,539.82

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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.