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Finding the Fourth Proportional to 18,354.86, 25,333.78 and 10,401.47

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Solution

The fourth proportional to 18,354.86, 25,333.78 and 10,401.47 is: 14,356.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354.86 : 25,333.78 = 10,401.47 : x
  2. Step 2: Convert to fraction form
    18,354.86/25,333.78 = 10,401.47/x
  3. Step 3: Cross multiply
    18,354.86x = 25,333.78 × 10,401.47
  4. Step 4: Simplify right side
    18,354.86x = 263,508,514.49
  5. Step 5: Solve for x
    x = 263,508,514.49/18,354.86
  6. Step 6: Final answer
    x = 14,356.34

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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.