Home / 11,380.20-15,695.52-7,127.40

Finding the Fourth Proportional to 11,380.20, 15,695.52 and 7,127.40

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Solution

The fourth proportional to 11,380.20, 15,695.52 and 7,127.40 is: 9,830.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,380.20 : 15,695.52 = 7,127.40 : x
  2. Step 2: Convert to fraction form
    11,380.20/15,695.52 = 7,127.40/x
  3. Step 3: Cross multiply
    11,380.20x = 15,695.52 × 7,127.40
  4. Step 4: Simplify right side
    11,380.20x = 111,868,249.25
  5. Step 5: Solve for x
    x = 111,868,249.25/11,380.20
  6. Step 6: Final answer
    x = 9,830.08

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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.