Home / 21,144.84-29,179.80-11,713.20

Finding the Fourth Proportional to 21,144.84, 29,179.80 and 11,713.20

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Solution

The fourth proportional to 21,144.84, 29,179.80 and 11,713.20 is: 16,164.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.84 : 29,179.80 = 11,713.20 : x
  2. Step 2: Convert to fraction form
    21,144.84/29,179.80 = 11,713.20/x
  3. Step 3: Cross multiply
    21,144.84x = 29,179.80 × 11,713.20
  4. Step 4: Simplify right side
    21,144.84x = 341,788,833.36
  5. Step 5: Solve for x
    x = 341,788,833.36/21,144.84
  6. Step 6: Final answer
    x = 16,164.17

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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.