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Finding the Fourth Proportional to 29,650.78, 40,943.01 and 21,178.89

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Solution

The fourth proportional to 29,650.78, 40,943.01 and 21,178.89 is: 29,244.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,650.78 : 40,943.01 = 21,178.89 : x
  2. Step 2: Convert to fraction form
    29,650.78/40,943.01 = 21,178.89/x
  3. Step 3: Cross multiply
    29,650.78x = 40,943.01 × 21,178.89
  4. Step 4: Simplify right side
    29,650.78x = 867,127,505.06
  5. Step 5: Solve for x
    x = 867,127,505.06/29,650.78
  6. Step 6: Final answer
    x = 29,244.68

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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.