Home / 20,713.20-28,585.56-12,328.56

Finding the Fourth Proportional to 20,713.20, 28,585.56 and 12,328.56

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Solution

The fourth proportional to 20,713.20, 28,585.56 and 12,328.56 is: 17,014.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.20 : 28,585.56 = 12,328.56 : x
  2. Step 2: Convert to fraction form
    20,713.20/28,585.56 = 12,328.56/x
  3. Step 3: Cross multiply
    20,713.20x = 28,585.56 × 12,328.56
  4. Step 4: Simplify right side
    20,713.20x = 352,418,791.59
  5. Step 5: Solve for x
    x = 352,418,791.59/20,713.20
  6. Step 6: Final answer
    x = 17,014.21

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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.