Home / 13,691.52-18,897.48-11,449.56

Finding the Fourth Proportional to 13,691.52, 18,897.48 and 11,449.56

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Solution

The fourth proportional to 13,691.52, 18,897.48 and 11,449.56 is: 15,803.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.52 : 18,897.48 = 11,449.56 : x
  2. Step 2: Convert to fraction form
    13,691.52/18,897.48 = 11,449.56/x
  3. Step 3: Cross multiply
    13,691.52x = 18,897.48 × 11,449.56
  4. Step 4: Simplify right side
    13,691.52x = 216,367,831.11
  5. Step 5: Solve for x
    x = 216,367,831.11/13,691.52
  6. Step 6: Final answer
    x = 15,803.05

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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.