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Finding the Fourth Proportional to 17,863.21, 26,795.04 and 12,315.07

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Solution

The fourth proportional to 17,863.21, 26,795.04 and 12,315.07 is: 18,472.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,863.21 : 26,795.04 = 12,315.07 : x
  2. Step 2: Convert to fraction form
    17,863.21/26,795.04 = 12,315.07/x
  3. Step 3: Cross multiply
    17,863.21x = 26,795.04 × 12,315.07
  4. Step 4: Simplify right side
    17,863.21x = 329,982,793.25
  5. Step 5: Solve for x
    x = 329,982,793.25/17,863.21
  6. Step 6: Final answer
    x = 18,472.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.