Home / 21,111.94-29,135.25-11,680.58

Finding the Fourth Proportional to 21,111.94, 29,135.25 and 11,680.58

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Solution

The fourth proportional to 21,111.94, 29,135.25 and 11,680.58 is: 16,119.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,111.94 : 29,135.25 = 11,680.58 : x
  2. Step 2: Convert to fraction form
    21,111.94/29,135.25 = 11,680.58/x
  3. Step 3: Cross multiply
    21,111.94x = 29,135.25 × 11,680.58
  4. Step 4: Simplify right side
    21,111.94x = 340,316,618.45
  5. Step 5: Solve for x
    x = 340,316,618.45/21,111.94
  6. Step 6: Final answer
    x = 16,119.63

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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.