Home / 30,111.98-41,568.97-21,167.15

Finding the Fourth Proportional to 30,111.98, 41,568.97 and 21,167.15

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Solution

The fourth proportional to 30,111.98, 41,568.97 and 21,167.15 is: 29,220.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,111.98 : 41,568.97 = 21,167.15 : x
  2. Step 2: Convert to fraction form
    30,111.98/41,568.97 = 21,167.15/x
  3. Step 3: Cross multiply
    30,111.98x = 41,568.97 × 21,167.15
  4. Step 4: Simplify right side
    30,111.98x = 879,896,415.49
  5. Step 5: Solve for x
    x = 879,896,415.49/30,111.98
  6. Step 6: Final answer
    x = 29,220.81

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Half scale
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Double scale
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Similar ratio
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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.