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Finding the Fourth Proportional to 30,248.60, 41,744.22 and 16,821.42

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Solution

The fourth proportional to 30,248.60, 41,744.22 and 16,821.42 is: 23,214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,248.60 : 41,744.22 = 16,821.42 : x
  2. Step 2: Convert to fraction form
    30,248.60/41,744.22 = 16,821.42/x
  3. Step 3: Cross multiply
    30,248.60x = 41,744.22 × 16,821.42
  4. Step 4: Simplify right side
    30,248.60x = 702,197,057.19
  5. Step 5: Solve for x
    x = 702,197,057.19/30,248.60
  6. Step 6: Final answer
    x = 23,214.20

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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.