Home / 19,691.93-27,165.49-13,320.75

Finding the Fourth Proportional to 19,691.93, 27,165.49 and 13,320.75

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Solution

The fourth proportional to 19,691.93, 27,165.49 and 13,320.75 is: 18,376.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,691.93 : 27,165.49 = 13,320.75 : x
  2. Step 2: Convert to fraction form
    19,691.93/27,165.49 = 13,320.75/x
  3. Step 3: Cross multiply
    19,691.93x = 27,165.49 × 13,320.75
  4. Step 4: Simplify right side
    19,691.93x = 361,864,769.49
  5. Step 5: Solve for x
    x = 361,864,769.49/19,691.93
  6. Step 6: Final answer
    x = 18,376.30

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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.