Home / 21,155.58-29,194.02-11,724.48

Finding the Fourth Proportional to 21,155.58, 29,194.02 and 11,724.48

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Solution

The fourth proportional to 21,155.58, 29,194.02 and 11,724.48 is: 16,179.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.58 : 29,194.02 = 11,724.48 : x
  2. Step 2: Convert to fraction form
    21,155.58/29,194.02 = 11,724.48/x
  3. Step 3: Cross multiply
    21,155.58x = 29,194.02 × 11,724.48
  4. Step 4: Simplify right side
    21,155.58x = 342,284,703.61
  5. Step 5: Solve for x
    x = 342,284,703.61/21,155.58
  6. Step 6: Final answer
    x = 16,179.41

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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.