Home / 20,674.20-28,530.03-11,242.71

Finding the Fourth Proportional to 20,674.20, 28,530.03 and 11,242.71

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Solution

The fourth proportional to 20,674.20, 28,530.03 and 11,242.71 is: 15,514.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.20 : 28,530.03 = 11,242.71 : x
  2. Step 2: Convert to fraction form
    20,674.20/28,530.03 = 11,242.71/x
  3. Step 3: Cross multiply
    20,674.20x = 28,530.03 × 11,242.71
  4. Step 4: Simplify right side
    20,674.20x = 320,754,853.58
  5. Step 5: Solve for x
    x = 320,754,853.58/20,674.20
  6. Step 6: Final answer
    x = 15,514.74

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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.