Home / 18,707.85-25,816.19-11,150.28

Finding the Fourth Proportional to 18,707.85, 25,816.19 and 11,150.28

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Solution

The fourth proportional to 18,707.85, 25,816.19 and 11,150.28 is: 15,387.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.85 : 25,816.19 = 11,150.28 : x
  2. Step 2: Convert to fraction form
    18,707.85/25,816.19 = 11,150.28/x
  3. Step 3: Cross multiply
    18,707.85x = 25,816.19 × 11,150.28
  4. Step 4: Simplify right side
    18,707.85x = 287,857,691.28
  5. Step 5: Solve for x
    x = 287,857,691.28/18,707.85
  6. Step 6: Final answer
    x = 15,387.00

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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.