Home / 20,677.23-28,535.18-12,724.11

Finding the Fourth Proportional to 20,677.23, 28,535.18 and 12,724.11

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Solution

The fourth proportional to 20,677.23, 28,535.18 and 12,724.11 is: 17,559.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.23 : 28,535.18 = 12,724.11 : x
  2. Step 2: Convert to fraction form
    20,677.23/28,535.18 = 12,724.11/x
  3. Step 3: Cross multiply
    20,677.23x = 28,535.18 × 12,724.11
  4. Step 4: Simplify right side
    20,677.23x = 363,084,769.19
  5. Step 5: Solve for x
    x = 363,084,769.19/20,677.23
  6. Step 6: Final answer
    x = 17,559.64

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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.