Home / 20,119.69-27,766.70-11,167.12

Finding the Fourth Proportional to 20,119.69, 27,766.70 and 11,167.12

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Solution

The fourth proportional to 20,119.69, 27,766.70 and 11,167.12 is: 15,411.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.69 : 27,766.70 = 11,167.12 : x
  2. Step 2: Convert to fraction form
    20,119.69/27,766.70 = 11,167.12/x
  3. Step 3: Cross multiply
    20,119.69x = 27,766.70 × 11,167.12
  4. Step 4: Simplify right side
    20,119.69x = 310,074,070.90
  5. Step 5: Solve for x
    x = 310,074,070.90/20,119.69
  6. Step 6: Final answer
    x = 15,411.47

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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.