Home / 13,996.80-19,314.86-8,691.50

Finding the Fourth Proportional to 13,996.80, 19,314.86 and 8,691.50

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Solution

The fourth proportional to 13,996.80, 19,314.86 and 8,691.50 is: 11,993.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,996.80 : 19,314.86 = 8,691.50 : x
  2. Step 2: Convert to fraction form
    13,996.80/19,314.86 = 8,691.50/x
  3. Step 3: Cross multiply
    13,996.80x = 19,314.86 × 8,691.50
  4. Step 4: Simplify right side
    13,996.80x = 167,875,110.52
  5. Step 5: Solve for x
    x = 167,875,110.52/13,996.80
  6. Step 6: Final answer
    x = 11,993.82

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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.