Home / 31,769.28-43,836.96-18,338.40

Finding the Fourth Proportional to 31,769.28, 43,836.96 and 18,338.40

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Solution

The fourth proportional to 31,769.28, 43,836.96 and 18,338.40 is: 25,304.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,769.28 : 43,836.96 = 18,338.40 : x
  2. Step 2: Convert to fraction form
    31,769.28/43,836.96 = 18,338.40/x
  3. Step 3: Cross multiply
    31,769.28x = 43,836.96 × 18,338.40
  4. Step 4: Simplify right side
    31,769.28x = 803,899,707.26
  5. Step 5: Solve for x
    x = 803,899,707.26/31,769.28
  6. Step 6: Final answer
    x = 25,304.31

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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.