Home / 10,881.20-15,014.76-6,404.60

Finding the Fourth Proportional to 10,881.20, 15,014.76 and 6,404.60

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Solution

The fourth proportional to 10,881.20, 15,014.76 and 6,404.60 is: 8,837.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.20 : 15,014.76 = 6,404.60 : x
  2. Step 2: Convert to fraction form
    10,881.20/15,014.76 = 6,404.60/x
  3. Step 3: Cross multiply
    10,881.20x = 15,014.76 × 6,404.60
  4. Step 4: Simplify right side
    10,881.20x = 96,163,531.90
  5. Step 5: Solve for x
    x = 96,163,531.90/10,881.20
  6. Step 6: Final answer
    x = 8,837.59

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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.