Home / 20,977.46-28,948.29-11,545.82

Finding the Fourth Proportional to 20,977.46, 28,948.29 and 11,545.82

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Solution

The fourth proportional to 20,977.46, 28,948.29 and 11,545.82 is: 15,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.46 : 28,948.29 = 11,545.82 : x
  2. Step 2: Convert to fraction form
    20,977.46/28,948.29 = 11,545.82/x
  3. Step 3: Cross multiply
    20,977.46x = 28,948.29 × 11,545.82
  4. Step 4: Simplify right side
    20,977.46x = 334,231,745.65
  5. Step 5: Solve for x
    x = 334,231,745.65/20,977.46
  6. Step 6: Final answer
    x = 15,932.90

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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.