Home / 31,381.87-47,072.78-8,008.31

Finding the Fourth Proportional to 31,381.87, 47,072.78 and 8,008.31

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Solution

The fourth proportional to 31,381.87, 47,072.78 and 8,008.31 is: 12,012.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,381.87 : 47,072.78 = 8,008.31 : x
  2. Step 2: Convert to fraction form
    31,381.87/47,072.78 = 8,008.31/x
  3. Step 3: Cross multiply
    31,381.87x = 47,072.78 × 8,008.31
  4. Step 4: Simplify right side
    31,381.87x = 376,973,414.80
  5. Step 5: Solve for x
    x = 376,973,414.80/31,381.87
  6. Step 6: Final answer
    x = 12,012.46

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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.