Home / 21,377.12-29,497.87-11,816.45

Finding the Fourth Proportional to 21,377.12, 29,497.87 and 11,816.45

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Solution

The fourth proportional to 21,377.12, 29,497.87 and 11,816.45 is: 16,305.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.12 : 29,497.87 = 11,816.45 : x
  2. Step 2: Convert to fraction form
    21,377.12/29,497.87 = 11,816.45/x
  3. Step 3: Cross multiply
    21,377.12x = 29,497.87 × 11,816.45
  4. Step 4: Simplify right side
    21,377.12x = 348,560,083.86
  5. Step 5: Solve for x
    x = 348,560,083.86/21,377.12
  6. Step 6: Final answer
    x = 16,305.29

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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.