Home / 21,333.49-29,438.18-11,902.66

Finding the Fourth Proportional to 21,333.49, 29,438.18 and 11,902.66

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Solution

The fourth proportional to 21,333.49, 29,438.18 and 11,902.66 is: 16,424.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,333.49 : 29,438.18 = 11,902.66 : x
  2. Step 2: Convert to fraction form
    21,333.49/29,438.18 = 11,902.66/x
  3. Step 3: Cross multiply
    21,333.49x = 29,438.18 × 11,902.66
  4. Step 4: Simplify right side
    21,333.49x = 350,392,588.05
  5. Step 5: Solve for x
    x = 350,392,588.05/21,333.49
  6. Step 6: Final answer
    x = 16,424.53

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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.