Home / 20,081.95-27,712.38-11,130.29

Finding the Fourth Proportional to 20,081.95, 27,712.38 and 11,130.29

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Solution

The fourth proportional to 20,081.95, 27,712.38 and 11,130.29 is: 15,359.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.95 : 27,712.38 = 11,130.29 : x
  2. Step 2: Convert to fraction form
    20,081.95/27,712.38 = 11,130.29/x
  3. Step 3: Cross multiply
    20,081.95x = 27,712.38 × 11,130.29
  4. Step 4: Simplify right side
    20,081.95x = 308,446,687.43
  5. Step 5: Solve for x
    x = 308,446,687.43/20,081.95
  6. Step 6: Final answer
    x = 15,359.40

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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.