Home / 21,147.93-29,177.50-12,194.22

Finding the Fourth Proportional to 21,147.93, 29,177.50 and 12,194.22

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Solution

The fourth proportional to 21,147.93, 29,177.50 and 12,194.22 is: 16,824.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.93 : 29,177.50 = 12,194.22 : x
  2. Step 2: Convert to fraction form
    21,147.93/29,177.50 = 12,194.22/x
  3. Step 3: Cross multiply
    21,147.93x = 29,177.50 × 12,194.22
  4. Step 4: Simplify right side
    21,147.93x = 355,796,854.05
  5. Step 5: Solve for x
    x = 355,796,854.05/21,147.93
  6. Step 6: Final answer
    x = 16,824.19

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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.