Home / 31,405.28-43,338.38-17,976.08

Finding the Fourth Proportional to 31,405.28, 43,338.38 and 17,976.08

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Solution

The fourth proportional to 31,405.28, 43,338.38 and 17,976.08 is: 24,806.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,405.28 : 43,338.38 = 17,976.08 : x
  2. Step 2: Convert to fraction form
    31,405.28/43,338.38 = 17,976.08/x
  3. Step 3: Cross multiply
    31,405.28x = 43,338.38 × 17,976.08
  4. Step 4: Simplify right side
    31,405.28x = 779,054,204.42
  5. Step 5: Solve for x
    x = 779,054,204.42/31,405.28
  6. Step 6: Final answer
    x = 24,806.48

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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.