Home / 20,048.67-27,667.62-12,987.38

Finding the Fourth Proportional to 20,048.67, 27,667.62 and 12,987.38

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Solution

The fourth proportional to 20,048.67, 27,667.62 and 12,987.38 is: 17,922.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,048.67 : 27,667.62 = 12,987.38 : x
  2. Step 2: Convert to fraction form
    20,048.67/27,667.62 = 12,987.38/x
  3. Step 3: Cross multiply
    20,048.67x = 27,667.62 × 12,987.38
  4. Step 4: Simplify right side
    20,048.67x = 359,329,894.64
  5. Step 5: Solve for x
    x = 359,329,894.64/20,048.67
  6. Step 6: Final answer
    x = 17,922.88

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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.