Home / 21,205.84-29,264.12-11,776.16

Finding the Fourth Proportional to 21,205.84, 29,264.12 and 11,776.16

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Solution

The fourth proportional to 21,205.84, 29,264.12 and 11,776.16 is: 16,251.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,205.84 : 29,264.12 = 11,776.16 : x
  2. Step 2: Convert to fraction form
    21,205.84/29,264.12 = 11,776.16/x
  3. Step 3: Cross multiply
    21,205.84x = 29,264.12 × 11,776.16
  4. Step 4: Simplify right side
    21,205.84x = 344,618,959.38
  5. Step 5: Solve for x
    x = 344,618,959.38/21,205.84
  6. Step 6: Final answer
    x = 16,251.13

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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.