Home / 21,966.30-30,313.11-11,894.66

Finding the Fourth Proportional to 21,966.30, 30,313.11 and 11,894.66

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Solution

The fourth proportional to 21,966.30, 30,313.11 and 11,894.66 is: 16,414.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.30 : 30,313.11 = 11,894.66 : x
  2. Step 2: Convert to fraction form
    21,966.30/30,313.11 = 11,894.66/x
  3. Step 3: Cross multiply
    21,966.30x = 30,313.11 × 11,894.66
  4. Step 4: Simplify right side
    21,966.30x = 360,564,143.71
  5. Step 5: Solve for x
    x = 360,564,143.71/21,966.30
  6. Step 6: Final answer
    x = 16,414.42

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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.