Home / 27,957.65-38,575.20-20,408.09

Finding the Fourth Proportional to 27,957.65, 38,575.20 and 20,408.09

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Solution

The fourth proportional to 27,957.65, 38,575.20 and 20,408.09 is: 28,158.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,957.65 : 38,575.20 = 20,408.09 : x
  2. Step 2: Convert to fraction form
    27,957.65/38,575.20 = 20,408.09/x
  3. Step 3: Cross multiply
    27,957.65x = 38,575.20 × 20,408.09
  4. Step 4: Simplify right side
    27,957.65x = 787,245,960.49
  5. Step 5: Solve for x
    x = 787,245,960.49/27,957.65
  6. Step 6: Final answer
    x = 28,158.52

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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.