Home / 13,693.13-20,574.32-13,139.54

Finding the Fourth Proportional to 13,693.13, 20,574.32 and 13,139.54

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Solution

The fourth proportional to 13,693.13, 20,574.32 and 13,139.54 is: 19,742.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.13 : 20,574.32 = 13,139.54 : x
  2. Step 2: Convert to fraction form
    13,693.13/20,574.32 = 13,139.54/x
  3. Step 3: Cross multiply
    13,693.13x = 20,574.32 × 13,139.54
  4. Step 4: Simplify right side
    13,693.13x = 270,336,932.04
  5. Step 5: Solve for x
    x = 270,336,932.04/13,693.13
  6. Step 6: Final answer
    x = 19,742.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.