Home / 31,576.05-43,560.10-18,821.97

Finding the Fourth Proportional to 31,576.05, 43,560.10 and 18,821.97

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Solution

The fourth proportional to 31,576.05, 43,560.10 and 18,821.97 is: 25,965.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,576.05 : 43,560.10 = 18,821.97 : x
  2. Step 2: Convert to fraction form
    31,576.05/43,560.10 = 18,821.97/x
  3. Step 3: Cross multiply
    31,576.05x = 43,560.10 × 18,821.97
  4. Step 4: Simplify right side
    31,576.05x = 819,886,971.86
  5. Step 5: Solve for x
    x = 819,886,971.86/31,576.05
  6. Step 6: Final answer
    x = 25,965.47

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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.