Home / 11,180.72-15,422.52-6,988.16

Finding the Fourth Proportional to 11,180.72, 15,422.52 and 6,988.16

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Solution

The fourth proportional to 11,180.72, 15,422.52 and 6,988.16 is: 9,639.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,180.72 : 15,422.52 = 6,988.16 : x
  2. Step 2: Convert to fraction form
    11,180.72/15,422.52 = 6,988.16/x
  3. Step 3: Cross multiply
    11,180.72x = 15,422.52 × 6,988.16
  4. Step 4: Simplify right side
    11,180.72x = 107,775,037.36
  5. Step 5: Solve for x
    x = 107,775,037.36/11,180.72
  6. Step 6: Final answer
    x = 9,639.36

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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.