Home / 21,640.66-29,864.22-12,081.44

Finding the Fourth Proportional to 21,640.66, 29,864.22 and 12,081.44

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Solution

The fourth proportional to 21,640.66, 29,864.22 and 12,081.44 is: 16,672.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,640.66 : 29,864.22 = 12,081.44 : x
  2. Step 2: Convert to fraction form
    21,640.66/29,864.22 = 12,081.44/x
  3. Step 3: Cross multiply
    21,640.66x = 29,864.22 × 12,081.44
  4. Step 4: Simplify right side
    21,640.66x = 360,802,782.08
  5. Step 5: Solve for x
    x = 360,802,782.08/21,640.66
  6. Step 6: Final answer
    x = 16,672.45

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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.