Home / 31,943.36-47,908.92-18,780.38

Finding the Fourth Proportional to 31,943.36, 47,908.92 and 18,780.38

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Solution

The fourth proportional to 31,943.36, 47,908.92 and 18,780.38 is: 28,166.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,943.36 : 47,908.92 = 18,780.38 : x
  2. Step 2: Convert to fraction form
    31,943.36/47,908.92 = 18,780.38/x
  3. Step 3: Cross multiply
    31,943.36x = 47,908.92 × 18,780.38
  4. Step 4: Simplify right side
    31,943.36x = 899,747,722.99
  5. Step 5: Solve for x
    x = 899,747,722.99/31,943.36
  6. Step 6: Final answer
    x = 28,166.97

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1.5x scale

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.