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Finding the Fourth Proportional to 29,381.67, 40,496.22 and 21,212.01

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Solution

The fourth proportional to 29,381.67, 40,496.22 and 21,212.01 is: 29,236.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,381.67 : 40,496.22 = 21,212.01 : x
  2. Step 2: Convert to fraction form
    29,381.67/40,496.22 = 21,212.01/x
  3. Step 3: Cross multiply
    29,381.67x = 40,496.22 × 21,212.01
  4. Step 4: Simplify right side
    29,381.67x = 859,006,223.60
  5. Step 5: Solve for x
    x = 859,006,223.60/29,381.67
  6. Step 6: Final answer
    x = 29,236.13

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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.