Home / 10,987.38-15,159.92-6,512.22

Finding the Fourth Proportional to 10,987.38, 15,159.92 and 6,512.22

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Solution

The fourth proportional to 10,987.38, 15,159.92 and 6,512.22 is: 8,985.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.38 : 15,159.92 = 6,512.22 : x
  2. Step 2: Convert to fraction form
    10,987.38/15,159.92 = 6,512.22/x
  3. Step 3: Cross multiply
    10,987.38x = 15,159.92 × 6,512.22
  4. Step 4: Simplify right side
    10,987.38x = 98,724,701.66
  5. Step 5: Solve for x
    x = 98,724,701.66/10,987.38
  6. Step 6: Final answer
    x = 8,985.28

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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.