Home / 11,179.16-15,427.28-6,143.49

Finding the Fourth Proportional to 11,179.16, 15,427.28 and 6,143.49

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Solution

The fourth proportional to 11,179.16, 15,427.28 and 6,143.49 is: 8,478.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179.16 : 15,427.28 = 6,143.49 : x
  2. Step 2: Convert to fraction form
    11,179.16/15,427.28 = 6,143.49/x
  3. Step 3: Cross multiply
    11,179.16x = 15,427.28 × 6,143.49
  4. Step 4: Simplify right side
    11,179.16x = 94,777,340.41
  5. Step 5: Solve for x
    x = 94,777,340.41/11,179.16
  6. Step 6: Final answer
    x = 8,478.04

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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.