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Finding the Fourth Proportional to 29,424.82, 40,605.92 and 21,904.78

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Solution

The fourth proportional to 29,424.82, 40,605.92 and 21,904.78 is: 30,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,424.82 : 40,605.92 = 21,904.78 : x
  2. Step 2: Convert to fraction form
    29,424.82/40,605.92 = 21,904.78/x
  3. Step 3: Cross multiply
    29,424.82x = 40,605.92 × 21,904.78
  4. Step 4: Simplify right side
    29,424.82x = 889,463,744.30
  5. Step 5: Solve for x
    x = 889,463,744.30/29,424.82
  6. Step 6: Final answer
    x = 30,228.35

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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.