Home / 19,890.80-29,834.62-11,565.50

Finding the Fourth Proportional to 19,890.80, 29,834.62 and 11,565.50

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Solution

The fourth proportional to 19,890.80, 29,834.62 and 11,565.50 is: 17,347.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.80 : 29,834.62 = 11,565.50 : x
  2. Step 2: Convert to fraction form
    19,890.80/29,834.62 = 11,565.50/x
  3. Step 3: Cross multiply
    19,890.80x = 29,834.62 × 11,565.50
  4. Step 4: Simplify right side
    19,890.80x = 345,052,297.61
  5. Step 5: Solve for x
    x = 345,052,297.61/19,890.80
  6. Step 6: Final answer
    x = 17,347.33

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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.