Home / 15,786.66-21,787.11-11,800.74

Finding the Fourth Proportional to 15,786.66, 21,787.11 and 11,800.74

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Solution

The fourth proportional to 15,786.66, 21,787.11 and 11,800.74 is: 16,286.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786.66 : 21,787.11 = 11,800.74 : x
  2. Step 2: Convert to fraction form
    15,786.66/21,787.11 = 11,800.74/x
  3. Step 3: Cross multiply
    15,786.66x = 21,787.11 × 11,800.74
  4. Step 4: Simplify right side
    15,786.66x = 257,104,020.46
  5. Step 5: Solve for x
    x = 257,104,020.46/15,786.66
  6. Step 6: Final answer
    x = 16,286.16

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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.