Home / 20,324.66-28,042.52-13,953.20

Finding the Fourth Proportional to 20,324.66, 28,042.52 and 13,953.20

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Solution

The fourth proportional to 20,324.66, 28,042.52 and 13,953.20 is: 19,251.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.66 : 28,042.52 = 13,953.20 : x
  2. Step 2: Convert to fraction form
    20,324.66/28,042.52 = 13,953.20/x
  3. Step 3: Cross multiply
    20,324.66x = 28,042.52 × 13,953.20
  4. Step 4: Simplify right side
    20,324.66x = 391,282,890.06
  5. Step 5: Solve for x
    x = 391,282,890.06/20,324.66
  6. Step 6: Final answer
    x = 19,251.63

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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.