Home / 20,599.11-30,891.38-12,705.86

Finding the Fourth Proportional to 20,599.11, 30,891.38 and 12,705.86

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Solution

The fourth proportional to 20,599.11, 30,891.38 and 12,705.86 is: 19,054.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,599.11 : 30,891.38 = 12,705.86 : x
  2. Step 2: Convert to fraction form
    20,599.11/30,891.38 = 12,705.86/x
  3. Step 3: Cross multiply
    20,599.11x = 30,891.38 × 12,705.86
  4. Step 4: Simplify right side
    20,599.11x = 392,501,563.19
  5. Step 5: Solve for x
    x = 392,501,563.19/20,599.11
  6. Step 6: Final answer
    x = 19,054.30

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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.