Home / 13,419.52-18,515.59-8,042.81

Finding the Fourth Proportional to 13,419.52, 18,515.59 and 8,042.81

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Solution

The fourth proportional to 13,419.52, 18,515.59 and 8,042.81 is: 11,097.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.52 : 18,515.59 = 8,042.81 : x
  2. Step 2: Convert to fraction form
    13,419.52/18,515.59 = 8,042.81/x
  3. Step 3: Cross multiply
    13,419.52x = 18,515.59 × 8,042.81
  4. Step 4: Simplify right side
    13,419.52x = 148,917,239.62
  5. Step 5: Solve for x
    x = 148,917,239.62/13,419.52
  6. Step 6: Final answer
    x = 11,097.07

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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.