Home / 20,458.48-30,668.28-13,042.12

Finding the Fourth Proportional to 20,458.48, 30,668.28 and 13,042.12

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Solution

The fourth proportional to 20,458.48, 30,668.28 and 13,042.12 is: 19,550.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.48 : 30,668.28 = 13,042.12 : x
  2. Step 2: Convert to fraction form
    20,458.48/30,668.28 = 13,042.12/x
  3. Step 3: Cross multiply
    20,458.48x = 30,668.28 × 13,042.12
  4. Step 4: Simplify right side
    20,458.48x = 399,979,387.95
  5. Step 5: Solve for x
    x = 399,979,387.95/20,458.48
  6. Step 6: Final answer
    x = 19,550.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.