Home / 20,458.69-28,233.30-12,499.23

Finding the Fourth Proportional to 20,458.69, 28,233.30 and 12,499.23

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Solution

The fourth proportional to 20,458.69, 28,233.30 and 12,499.23 is: 17,249.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.69 : 28,233.30 = 12,499.23 : x
  2. Step 2: Convert to fraction form
    20,458.69/28,233.30 = 12,499.23/x
  3. Step 3: Cross multiply
    20,458.69x = 28,233.30 × 12,499.23
  4. Step 4: Simplify right side
    20,458.69x = 352,894,306.70
  5. Step 5: Solve for x
    x = 352,894,306.70/20,458.69
  6. Step 6: Final answer
    x = 17,249.12

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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.