Home / 21,928.74-30,261.60-11,857.11

Finding the Fourth Proportional to 21,928.74, 30,261.60 and 11,857.11

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Solution

The fourth proportional to 21,928.74, 30,261.60 and 11,857.11 is: 16,362.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.74 : 30,261.60 = 11,857.11 : x
  2. Step 2: Convert to fraction form
    21,928.74/30,261.60 = 11,857.11/x
  3. Step 3: Cross multiply
    21,928.74x = 30,261.60 × 11,857.11
  4. Step 4: Simplify right side
    21,928.74x = 358,815,119.98
  5. Step 5: Solve for x
    x = 358,815,119.98/21,928.74
  6. Step 6: Final answer
    x = 16,362.78

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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.