Home / 21,065.40-29,072.16-11,637

Finding the Fourth Proportional to 21,065.40, 29,072.16 and 11,637

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Solution

The fourth proportional to 21,065.40, 29,072.16 and 11,637 is: 16,060.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.40 : 29,072.16 = 11,637 : x
  2. Step 2: Convert to fraction form
    21,065.40/29,072.16 = 11,637/x
  3. Step 3: Cross multiply
    21,065.40x = 29,072.16 × 11,637
  4. Step 4: Simplify right side
    21,065.40x = 338,312,725.92
  5. Step 5: Solve for x
    x = 338,312,725.92/21,065.40
  6. Step 6: Final answer
    x = 16,060.11

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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.