Home / 20,545.80-30,740.70-13,633.80

Finding the Fourth Proportional to 20,545.80, 30,740.70 and 13,633.80

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Solution

The fourth proportional to 20,545.80, 30,740.70 and 13,633.80 is: 20,398.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,545.80 : 30,740.70 = 13,633.80 : x
  2. Step 2: Convert to fraction form
    20,545.80/30,740.70 = 13,633.80/x
  3. Step 3: Cross multiply
    20,545.80x = 30,740.70 × 13,633.80
  4. Step 4: Simplify right side
    20,545.80x = 419,112,555.66
  5. Step 5: Solve for x
    x = 419,112,555.66/20,545.80
  6. Step 6: Final answer
    x = 20,398.94

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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.