Home / 21,208.25-29,268.60-11,777.42

Finding the Fourth Proportional to 21,208.25, 29,268.60 and 11,777.42

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Solution

The fourth proportional to 21,208.25, 29,268.60 and 11,777.42 is: 16,253.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.25 : 29,268.60 = 11,777.42 : x
  2. Step 2: Convert to fraction form
    21,208.25/29,268.60 = 11,777.42/x
  3. Step 3: Cross multiply
    21,208.25x = 29,268.60 × 11,777.42
  4. Step 4: Simplify right side
    21,208.25x = 344,708,595.01
  5. Step 5: Solve for x
    x = 344,708,595.01/21,208.25
  6. Step 6: Final answer
    x = 16,253.51

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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.