Home / 28,377.45-39,161.70-15,631.43

Finding the Fourth Proportional to 28,377.45, 39,161.70 and 15,631.43

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Solution

The fourth proportional to 28,377.45, 39,161.70 and 15,631.43 is: 21,571.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.45 : 39,161.70 = 15,631.43 : x
  2. Step 2: Convert to fraction form
    28,377.45/39,161.70 = 15,631.43/x
  3. Step 3: Cross multiply
    28,377.45x = 39,161.70 × 15,631.43
  4. Step 4: Simplify right side
    28,377.45x = 612,153,176.42
  5. Step 5: Solve for x
    x = 612,153,176.42/28,377.45
  6. Step 6: Final answer
    x = 21,571.82

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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.