Home / 21,648.33-29,876.99-12,215.07

Finding the Fourth Proportional to 21,648.33, 29,876.99 and 12,215.07

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Solution

The fourth proportional to 21,648.33, 29,876.99 and 12,215.07 is: 16,858.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.33 : 29,876.99 = 12,215.07 : x
  2. Step 2: Convert to fraction form
    21,648.33/29,876.99 = 12,215.07/x
  3. Step 3: Cross multiply
    21,648.33x = 29,876.99 × 12,215.07
  4. Step 4: Simplify right side
    21,648.33x = 364,949,463.16
  5. Step 5: Solve for x
    x = 364,949,463.16/21,648.33
  6. Step 6: Final answer
    x = 16,858.09

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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.