Home / 28,209.62-38,929.05-15,462.85

Finding the Fourth Proportional to 28,209.62, 38,929.05 and 15,462.85

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Solution

The fourth proportional to 28,209.62, 38,929.05 and 15,462.85 is: 21,338.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.62 : 38,929.05 = 15,462.85 : x
  2. Step 2: Convert to fraction form
    28,209.62/38,929.05 = 15,462.85/x
  3. Step 3: Cross multiply
    28,209.62x = 38,929.05 × 15,462.85
  4. Step 4: Simplify right side
    28,209.62x = 601,954,060.79
  5. Step 5: Solve for x
    x = 601,954,060.79/28,209.62
  6. Step 6: Final answer
    x = 21,338.61

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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.