Home / 19,581.80-29,382.82-9,720.86

Finding the Fourth Proportional to 19,581.80, 29,382.82 and 9,720.86

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Solution

The fourth proportional to 19,581.80, 29,382.82 and 9,720.86 is: 14,586.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,581.80 : 29,382.82 = 9,720.86 : x
  2. Step 2: Convert to fraction form
    19,581.80/29,382.82 = 9,720.86/x
  3. Step 3: Cross multiply
    19,581.80x = 29,382.82 × 9,720.86
  4. Step 4: Simplify right side
    19,581.80x = 285,626,108.41
  5. Step 5: Solve for x
    x = 285,626,108.41/19,581.80
  6. Step 6: Final answer
    x = 14,586.31

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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.