Home / 13,319.12-18,387.07-8,284.97

Finding the Fourth Proportional to 13,319.12, 18,387.07 and 8,284.97

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Solution

The fourth proportional to 13,319.12, 18,387.07 and 8,284.97 is: 11,437.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.12 : 18,387.07 = 8,284.97 : x
  2. Step 2: Convert to fraction form
    13,319.12/18,387.07 = 8,284.97/x
  3. Step 3: Cross multiply
    13,319.12x = 18,387.07 × 8,284.97
  4. Step 4: Simplify right side
    13,319.12x = 152,336,348.59
  5. Step 5: Solve for x
    x = 152,336,348.59/13,319.12
  6. Step 6: Final answer
    x = 11,437.42

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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.