Home / 19,767.08-27,231.72-13,788.20

Finding the Fourth Proportional to 19,767.08, 27,231.72 and 13,788.20

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Solution

The fourth proportional to 19,767.08, 27,231.72 and 13,788.20 is: 18,995.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,767.08 : 27,231.72 = 13,788.20 : x
  2. Step 2: Convert to fraction form
    19,767.08/27,231.72 = 13,788.20/x
  3. Step 3: Cross multiply
    19,767.08x = 27,231.72 × 13,788.20
  4. Step 4: Simplify right side
    19,767.08x = 375,476,401.70
  5. Step 5: Solve for x
    x = 375,476,401.70/19,767.08
  6. Step 6: Final answer
    x = 18,995.04

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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.