Home / 11,129.55-15,360.25-6,348.40

Finding the Fourth Proportional to 11,129.55, 15,360.25 and 6,348.40

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Solution

The fourth proportional to 11,129.55, 15,360.25 and 6,348.40 is: 8,761.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.55 : 15,360.25 = 6,348.40 : x
  2. Step 2: Convert to fraction form
    11,129.55/15,360.25 = 6,348.40/x
  3. Step 3: Cross multiply
    11,129.55x = 15,360.25 × 6,348.40
  4. Step 4: Simplify right side
    11,129.55x = 97,512,921.76
  5. Step 5: Solve for x
    x = 97,512,921.76/11,129.55
  6. Step 6: Final answer
    x = 8,761.62

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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.