Home / 9,987.03-13,778.88-6,630.49

Finding the Fourth Proportional to 9,987.03, 13,778.88 and 6,630.49

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Solution

The fourth proportional to 9,987.03, 13,778.88 and 6,630.49 is: 9,147.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.03 : 13,778.88 = 6,630.49 : x
  2. Step 2: Convert to fraction form
    9,987.03/13,778.88 = 6,630.49/x
  3. Step 3: Cross multiply
    9,987.03x = 13,778.88 × 6,630.49
  4. Step 4: Simplify right side
    9,987.03x = 91,360,726.05
  5. Step 5: Solve for x
    x = 91,360,726.05/9,987.03
  6. Step 6: Final answer
    x = 9,147.94

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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.