Home / 21,150.60-29,187.75-11,719.15

Finding the Fourth Proportional to 21,150.60, 29,187.75 and 11,719.15

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Solution

The fourth proportional to 21,150.60, 29,187.75 and 11,719.15 is: 16,172.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.60 : 29,187.75 = 11,719.15 : x
  2. Step 2: Convert to fraction form
    21,150.60/29,187.75 = 11,719.15/x
  3. Step 3: Cross multiply
    21,150.60x = 29,187.75 × 11,719.15
  4. Step 4: Simplify right side
    21,150.60x = 342,055,620.41
  5. Step 5: Solve for x
    x = 342,055,620.41/21,150.60
  6. Step 6: Final answer
    x = 16,172.38

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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.