Home / 20,892.12-28,832.40-13,806.24

Finding the Fourth Proportional to 20,892.12, 28,832.40 and 13,806.24

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Solution

The fourth proportional to 20,892.12, 28,832.40 and 13,806.24 is: 19,053.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.12 : 28,832.40 = 13,806.24 : x
  2. Step 2: Convert to fraction form
    20,892.12/28,832.40 = 13,806.24/x
  3. Step 3: Cross multiply
    20,892.12x = 28,832.40 × 13,806.24
  4. Step 4: Simplify right side
    20,892.12x = 398,067,034.18
  5. Step 5: Solve for x
    x = 398,067,034.18/20,892.12
  6. Step 6: Final answer
    x = 19,053.45

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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.