Home / 13,405.79-20,111.31-4,046.57

Finding the Fourth Proportional to 13,405.79, 20,111.31 and 4,046.57

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Solution

The fourth proportional to 13,405.79, 20,111.31 and 4,046.57 is: 6,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.79 : 20,111.31 = 4,046.57 : x
  2. Step 2: Convert to fraction form
    13,405.79/20,111.31 = 4,046.57/x
  3. Step 3: Cross multiply
    13,405.79x = 20,111.31 × 4,046.57
  4. Step 4: Simplify right side
    13,405.79x = 81,381,873.98
  5. Step 5: Solve for x
    x = 81,381,873.98/13,405.79
  6. Step 6: Final answer
    x = 6,070.65

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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.