Home / 21,335.45-29,441.82-11,902.19

Finding the Fourth Proportional to 21,335.45, 29,441.82 and 11,902.19

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Solution

The fourth proportional to 21,335.45, 29,441.82 and 11,902.19 is: 16,424.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.45 : 29,441.82 = 11,902.19 : x
  2. Step 2: Convert to fraction form
    21,335.45/29,441.82 = 11,902.19/x
  3. Step 3: Cross multiply
    21,335.45x = 29,441.82 × 11,902.19
  4. Step 4: Simplify right side
    21,335.45x = 350,421,988.38
  5. Step 5: Solve for x
    x = 350,421,988.38/21,335.45
  6. Step 6: Final answer
    x = 16,424.40

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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.