Home / 25,950.11-38,930.85-8,421.71

Finding the Fourth Proportional to 25,950.11, 38,930.85 and 8,421.71

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Solution

The fourth proportional to 25,950.11, 38,930.85 and 8,421.71 is: 12,634.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,950.11 : 38,930.85 = 8,421.71 : x
  2. Step 2: Convert to fraction form
    25,950.11/38,930.85 = 8,421.71/x
  3. Step 3: Cross multiply
    25,950.11x = 38,930.85 × 8,421.71
  4. Step 4: Simplify right side
    25,950.11x = 327,864,328.75
  5. Step 5: Solve for x
    x = 327,864,328.75/25,950.11
  6. Step 6: Final answer
    x = 12,634.41

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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.