Home / 11,148.76-15,387.56-6,432.40

Finding the Fourth Proportional to 11,148.76, 15,387.56 and 6,432.40

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Solution

The fourth proportional to 11,148.76, 15,387.56 and 6,432.40 is: 8,878.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,148.76 : 15,387.56 = 6,432.40 : x
  2. Step 2: Convert to fraction form
    11,148.76/15,387.56 = 6,432.40/x
  3. Step 3: Cross multiply
    11,148.76x = 15,387.56 × 6,432.40
  4. Step 4: Simplify right side
    11,148.76x = 98,978,940.94
  5. Step 5: Solve for x
    x = 98,978,940.94/11,148.76
  6. Step 6: Final answer
    x = 8,878.02

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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.