Home / 9,987.20-13,777.44-6,453.44

Finding the Fourth Proportional to 9,987.20, 13,777.44 and 6,453.44

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Solution

The fourth proportional to 9,987.20, 13,777.44 and 6,453.44 is: 8,902.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.20 : 13,777.44 = 6,453.44 : x
  2. Step 2: Convert to fraction form
    9,987.20/13,777.44 = 6,453.44/x
  3. Step 3: Cross multiply
    9,987.20x = 13,777.44 × 6,453.44
  4. Step 4: Simplify right side
    9,987.20x = 88,911,882.39
  5. Step 5: Solve for x
    x = 88,911,882.39/9,987.20
  6. Step 6: Final answer
    x = 8,902.58

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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.