Home / 25,920.57-38,872.74-8,386.77

Finding the Fourth Proportional to 25,920.57, 38,872.74 and 8,386.77

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Solution

The fourth proportional to 25,920.57, 38,872.74 and 8,386.77 is: 12,577.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,920.57 : 38,872.74 = 8,386.77 : x
  2. Step 2: Convert to fraction form
    25,920.57/38,872.74 = 8,386.77/x
  3. Step 3: Cross multiply
    25,920.57x = 38,872.74 × 8,386.77
  4. Step 4: Simplify right side
    25,920.57x = 326,016,729.65
  5. Step 5: Solve for x
    x = 326,016,729.65/25,920.57
  6. Step 6: Final answer
    x = 12,577.53

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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.