Home / 21,928.75-30,261.64-11,857.16

Finding the Fourth Proportional to 21,928.75, 30,261.64 and 11,857.16

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Solution

The fourth proportional to 21,928.75, 30,261.64 and 11,857.16 is: 16,362.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.75 : 30,261.64 = 11,857.16 : x
  2. Step 2: Convert to fraction form
    21,928.75/30,261.64 = 11,857.16/x
  3. Step 3: Cross multiply
    21,928.75x = 30,261.64 × 11,857.16
  4. Step 4: Simplify right side
    21,928.75x = 358,817,107.34
  5. Step 5: Solve for x
    x = 358,817,107.34/21,928.75
  6. Step 6: Final answer
    x = 16,362.86

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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.