Home / 21,377.14-29,499.45-11,816.66

Finding the Fourth Proportional to 21,377.14, 29,499.45 and 11,816.66

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Solution

The fourth proportional to 21,377.14, 29,499.45 and 11,816.66 is: 16,306.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.14 : 29,499.45 = 11,816.66 : x
  2. Step 2: Convert to fraction form
    21,377.14/29,499.45 = 11,816.66/x
  3. Step 3: Cross multiply
    21,377.14x = 29,499.45 × 11,816.66
  4. Step 4: Simplify right side
    21,377.14x = 348,584,970.84
  5. Step 5: Solve for x
    x = 348,584,970.84/21,377.14
  6. Step 6: Final answer
    x = 16,306.44

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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.