Home / 20,207.43-27,885.60-11,254.65

Finding the Fourth Proportional to 20,207.43, 27,885.60 and 11,254.65

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Solution

The fourth proportional to 20,207.43, 27,885.60 and 11,254.65 is: 15,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.43 : 27,885.60 = 11,254.65 : x
  2. Step 2: Convert to fraction form
    20,207.43/27,885.60 = 11,254.65/x
  3. Step 3: Cross multiply
    20,207.43x = 27,885.60 × 11,254.65
  4. Step 4: Simplify right side
    20,207.43x = 313,842,668.04
  5. Step 5: Solve for x
    x = 313,842,668.04/20,207.43
  6. Step 6: Final answer
    x = 15,531.05

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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.