Home / 20,242.49-27,934.69-11,290.57

Finding the Fourth Proportional to 20,242.49, 27,934.69 and 11,290.57

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Solution

The fourth proportional to 20,242.49, 27,934.69 and 11,290.57 is: 15,581.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.49 : 27,934.69 = 11,290.57 : x
  2. Step 2: Convert to fraction form
    20,242.49/27,934.69 = 11,290.57/x
  3. Step 3: Cross multiply
    20,242.49x = 27,934.69 × 11,290.57
  4. Step 4: Simplify right side
    20,242.49x = 315,398,516.42
  5. Step 5: Solve for x
    x = 315,398,516.42/20,242.49
  6. Step 6: Final answer
    x = 15,581.01

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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.