Home / 14,742.59-20,340.33-13,321.72

Finding the Fourth Proportional to 14,742.59, 20,340.33 and 13,321.72

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Solution

The fourth proportional to 14,742.59, 20,340.33 and 13,321.72 is: 18,379.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,742.59 : 20,340.33 = 13,321.72 : x
  2. Step 2: Convert to fraction form
    14,742.59/20,340.33 = 13,321.72/x
  3. Step 3: Cross multiply
    14,742.59x = 20,340.33 × 13,321.72
  4. Step 4: Simplify right side
    14,742.59x = 270,968,116.96
  5. Step 5: Solve for x
    x = 270,968,116.96/14,742.59
  6. Step 6: Final answer
    x = 18,379.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.