Home / 11,432.94-15,756.09-8,240.72

Finding the Fourth Proportional to 11,432.94, 15,756.09 and 8,240.72

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Solution

The fourth proportional to 11,432.94, 15,756.09 and 8,240.72 is: 11,356.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,432.94 : 15,756.09 = 8,240.72 : x
  2. Step 2: Convert to fraction form
    11,432.94/15,756.09 = 8,240.72/x
  3. Step 3: Cross multiply
    11,432.94x = 15,756.09 × 8,240.72
  4. Step 4: Simplify right side
    11,432.94x = 129,841,573.44
  5. Step 5: Solve for x
    x = 129,841,573.44/11,432.94
  6. Step 6: Final answer
    x = 11,356.79

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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.