Home / 12,545.80-18,825.98-5,620.30

Finding the Fourth Proportional to 12,545.80, 18,825.98 and 5,620.30

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Solution

The fourth proportional to 12,545.80, 18,825.98 and 5,620.30 is: 8,433.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.80 : 18,825.98 = 5,620.30 : x
  2. Step 2: Convert to fraction form
    12,545.80/18,825.98 = 5,620.30/x
  3. Step 3: Cross multiply
    12,545.80x = 18,825.98 × 5,620.30
  4. Step 4: Simplify right side
    12,545.80x = 105,807,561.26
  5. Step 5: Solve for x
    x = 105,807,561.26/12,545.80
  6. Step 6: Final answer
    x = 8,433.71

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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.