Home / 21,119.97-29,144.52-12,045.69

Finding the Fourth Proportional to 21,119.97, 29,144.52 and 12,045.69

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Solution

The fourth proportional to 21,119.97, 29,144.52 and 12,045.69 is: 16,622.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,119.97 : 29,144.52 = 12,045.69 : x
  2. Step 2: Convert to fraction form
    21,119.97/29,144.52 = 12,045.69/x
  3. Step 3: Cross multiply
    21,119.97x = 29,144.52 × 12,045.69
  4. Step 4: Simplify right side
    21,119.97x = 351,065,853.12
  5. Step 5: Solve for x
    x = 351,065,853.12/21,119.97
  6. Step 6: Final answer
    x = 16,622.46

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Double scale
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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.