Home / 21,377.05-29,498.99-11,816.69

Finding the Fourth Proportional to 21,377.05, 29,498.99 and 11,816.69

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Solution

The fourth proportional to 21,377.05, 29,498.99 and 11,816.69 is: 16,306.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.05 : 29,498.99 = 11,816.69 : x
  2. Step 2: Convert to fraction form
    21,377.05/29,498.99 = 11,816.69/x
  3. Step 3: Cross multiply
    21,377.05x = 29,498.99 × 11,816.69
  4. Step 4: Simplify right side
    21,377.05x = 348,580,213.56
  5. Step 5: Solve for x
    x = 348,580,213.56/21,377.05
  6. Step 6: Final answer
    x = 16,306.28

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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.