Home / 15,545.72-21,452.10-8,830.82

Finding the Fourth Proportional to 15,545.72, 21,452.10 and 8,830.82

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Solution

The fourth proportional to 15,545.72, 21,452.10 and 8,830.82 is: 12,185.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.72 : 21,452.10 = 8,830.82 : x
  2. Step 2: Convert to fraction form
    15,545.72/21,452.10 = 8,830.82/x
  3. Step 3: Cross multiply
    15,545.72x = 21,452.10 × 8,830.82
  4. Step 4: Simplify right side
    15,545.72x = 189,439,633.72
  5. Step 5: Solve for x
    x = 189,439,633.72/15,545.72
  6. Step 6: Final answer
    x = 12,185.97

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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.