Home / 21,217.21-31,797.46-11,335.21

Finding the Fourth Proportional to 21,217.21, 31,797.46 and 11,335.21

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Solution

The fourth proportional to 21,217.21, 31,797.46 and 11,335.21 is: 16,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.21 : 31,797.46 = 11,335.21 : x
  2. Step 2: Convert to fraction form
    21,217.21/31,797.46 = 11,335.21/x
  3. Step 3: Cross multiply
    21,217.21x = 31,797.46 × 11,335.21
  4. Step 4: Simplify right side
    21,217.21x = 360,430,886.57
  5. Step 5: Solve for x
    x = 360,430,886.57/21,217.21
  6. Step 6: Final answer
    x = 16,987.67

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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.