Home / 20,694.59-28,559.20-11,742.47

Finding the Fourth Proportional to 20,694.59, 28,559.20 and 11,742.47

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Solution

The fourth proportional to 20,694.59, 28,559.20 and 11,742.47 is: 16,204.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.59 : 28,559.20 = 11,742.47 : x
  2. Step 2: Convert to fraction form
    20,694.59/28,559.20 = 11,742.47/x
  3. Step 3: Cross multiply
    20,694.59x = 28,559.20 × 11,742.47
  4. Step 4: Simplify right side
    20,694.59x = 335,355,506.19
  5. Step 5: Solve for x
    x = 335,355,506.19/20,694.59
  6. Step 6: Final answer
    x = 16,204.99

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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.