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Finding the Fourth Proportional to 20,023.69, 30,042.69 and 8,929.39

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Solution

The fourth proportional to 20,023.69, 30,042.69 and 8,929.39 is: 13,397.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,023.69 : 30,042.69 = 8,929.39 : x
  2. Step 2: Convert to fraction form
    20,023.69/30,042.69 = 8,929.39/x
  3. Step 3: Cross multiply
    20,023.69x = 30,042.69 × 8,929.39
  4. Step 4: Simplify right side
    20,023.69x = 268,262,895.66
  5. Step 5: Solve for x
    x = 268,262,895.66/20,023.69
  6. Step 6: Final answer
    x = 13,397.28

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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.