Home / 19,823.76-29,779.20-13,612.56

Finding the Fourth Proportional to 19,823.76, 29,779.20 and 13,612.56

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Solution

The fourth proportional to 19,823.76, 29,779.20 and 13,612.56 is: 20,448.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,823.76 : 29,779.20 = 13,612.56 : x
  2. Step 2: Convert to fraction form
    19,823.76/29,779.20 = 13,612.56/x
  3. Step 3: Cross multiply
    19,823.76x = 29,779.20 × 13,612.56
  4. Step 4: Simplify right side
    19,823.76x = 405,371,146.75
  5. Step 5: Solve for x
    x = 405,371,146.75/19,823.76
  6. Step 6: Final answer
    x = 20,448.75

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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.