Home / 28,096.39-38,772.49-15,520.87

Finding the Fourth Proportional to 28,096.39, 38,772.49 and 15,520.87

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Solution

The fourth proportional to 28,096.39, 38,772.49 and 15,520.87 is: 21,418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,096.39 : 38,772.49 = 15,520.87 : x
  2. Step 2: Convert to fraction form
    28,096.39/38,772.49 = 15,520.87/x
  3. Step 3: Cross multiply
    28,096.39x = 38,772.49 × 15,520.87
  4. Step 4: Simplify right side
    28,096.39x = 601,782,776.87
  5. Step 5: Solve for x
    x = 601,782,776.87/28,096.39
  6. Step 6: Final answer
    x = 21,418.51

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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.