Home / 13,663.59-18,719.18-13,151.66

Finding the Fourth Proportional to 13,663.59, 18,719.18 and 13,151.66

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Solution

The fourth proportional to 13,663.59, 18,719.18 and 13,151.66 is: 18,017.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.59 : 18,719.18 = 13,151.66 : x
  2. Step 2: Convert to fraction form
    13,663.59/18,719.18 = 13,151.66/x
  3. Step 3: Cross multiply
    13,663.59x = 18,719.18 × 13,151.66
  4. Step 4: Simplify right side
    13,663.59x = 246,188,131.48
  5. Step 5: Solve for x
    x = 246,188,131.48/13,663.59
  6. Step 6: Final answer
    x = 18,017.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.