Home / 10,949.52-15,130.74-8,959.32

Finding the Fourth Proportional to 10,949.52, 15,130.74 and 8,959.32

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Solution

The fourth proportional to 10,949.52, 15,130.74 and 8,959.32 is: 12,380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,949.52 : 15,130.74 = 8,959.32 : x
  2. Step 2: Convert to fraction form
    10,949.52/15,130.74 = 8,959.32/x
  3. Step 3: Cross multiply
    10,949.52x = 15,130.74 × 8,959.32
  4. Step 4: Simplify right side
    10,949.52x = 135,561,141.50
  5. Step 5: Solve for x
    x = 135,561,141.50/10,949.52
  6. Step 6: Final answer
    x = 12,380.56

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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.