Home / 25,478.83-38,046.68-20,808.11

Finding the Fourth Proportional to 25,478.83, 38,046.68 and 20,808.11

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Solution

The fourth proportional to 25,478.83, 38,046.68 and 20,808.11 is: 31,072.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,478.83 : 38,046.68 = 20,808.11 : x
  2. Step 2: Convert to fraction form
    25,478.83/38,046.68 = 20,808.11/x
  3. Step 3: Cross multiply
    25,478.83x = 38,046.68 × 20,808.11
  4. Step 4: Simplify right side
    25,478.83x = 791,679,571.68
  5. Step 5: Solve for x
    x = 791,679,571.68/25,478.83
  6. Step 6: Final answer
    x = 31,072.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.