Home / 20,572.11-28,389.42-11,619.59

Finding the Fourth Proportional to 20,572.11, 28,389.42 and 11,619.59

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Solution

The fourth proportional to 20,572.11, 28,389.42 and 11,619.59 is: 16,034.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.11 : 28,389.42 = 11,619.59 : x
  2. Step 2: Convert to fraction form
    20,572.11/28,389.42 = 11,619.59/x
  3. Step 3: Cross multiply
    20,572.11x = 28,389.42 × 11,619.59
  4. Step 4: Simplify right side
    20,572.11x = 329,873,278.79
  5. Step 5: Solve for x
    x = 329,873,278.79/20,572.11
  6. Step 6: Final answer
    x = 16,034.98

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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.