Home / 31,478.33-43,439.57-18,048.78

Finding the Fourth Proportional to 31,478.33, 43,439.57 and 18,048.78

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Solution

The fourth proportional to 31,478.33, 43,439.57 and 18,048.78 is: 24,907.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,478.33 : 43,439.57 = 18,048.78 : x
  2. Step 2: Convert to fraction form
    31,478.33/43,439.57 = 18,048.78/x
  3. Step 3: Cross multiply
    31,478.33x = 43,439.57 × 18,048.78
  4. Step 4: Simplify right side
    31,478.33x = 784,031,151.98
  5. Step 5: Solve for x
    x = 784,031,151.98/31,478.33
  6. Step 6: Final answer
    x = 24,907.02

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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.