Home / 20,856.16-31,297.20-8,544.16

Finding the Fourth Proportional to 20,856.16, 31,297.20 and 8,544.16

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Solution

The fourth proportional to 20,856.16, 31,297.20 and 8,544.16 is: 12,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.16 : 31,297.20 = 8,544.16 : x
  2. Step 2: Convert to fraction form
    20,856.16/31,297.20 = 8,544.16/x
  3. Step 3: Cross multiply
    20,856.16x = 31,297.20 × 8,544.16
  4. Step 4: Simplify right side
    20,856.16x = 267,408,284.35
  5. Step 5: Solve for x
    x = 267,408,284.35/20,856.16
  6. Step 6: Final answer
    x = 12,821.55

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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.