Home / 38,428.14-57,642.30-12,133.20

Finding the Fourth Proportional to 38,428.14, 57,642.30 and 12,133.20

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Solution

The fourth proportional to 38,428.14, 57,642.30 and 12,133.20 is: 18,199.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,428.14 : 57,642.30 = 12,133.20 : x
  2. Step 2: Convert to fraction form
    38,428.14/57,642.30 = 12,133.20/x
  3. Step 3: Cross multiply
    38,428.14x = 57,642.30 × 12,133.20
  4. Step 4: Simplify right side
    38,428.14x = 699,385,554.36
  5. Step 5: Solve for x
    x = 699,385,554.36/38,428.14
  6. Step 6: Final answer
    x = 18,199.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.