Home / 13,670.12-20,505.38-4,309.96

Finding the Fourth Proportional to 13,670.12, 20,505.38 and 4,309.96

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Solution

The fourth proportional to 13,670.12, 20,505.38 and 4,309.96 is: 6,465.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.12 : 20,505.38 = 4,309.96 : x
  2. Step 2: Convert to fraction form
    13,670.12/20,505.38 = 4,309.96/x
  3. Step 3: Cross multiply
    13,670.12x = 20,505.38 × 4,309.96
  4. Step 4: Simplify right side
    13,670.12x = 88,377,367.58
  5. Step 5: Solve for x
    x = 88,377,367.58/13,670.12
  6. Step 6: Final answer
    x = 6,465.00

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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.