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Finding the Fourth Proportional to 29,634.84, 40,868.28 and 21,683.88

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Solution

The fourth proportional to 29,634.84, 40,868.28 and 21,683.88 is: 29,903.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,634.84 : 40,868.28 = 21,683.88 : x
  2. Step 2: Convert to fraction form
    29,634.84/40,868.28 = 21,683.88/x
  3. Step 3: Cross multiply
    29,634.84x = 40,868.28 × 21,683.88
  4. Step 4: Simplify right side
    29,634.84x = 886,182,879.33
  5. Step 5: Solve for x
    x = 886,182,879.33/29,634.84
  6. Step 6: Final answer
    x = 29,903.41

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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.