Home / 10,720.22-16,014.92-8,531.39

Finding the Fourth Proportional to 10,720.22, 16,014.92 and 8,531.39

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Solution

The fourth proportional to 10,720.22, 16,014.92 and 8,531.39 is: 12,745.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.22 : 16,014.92 = 8,531.39 : x
  2. Step 2: Convert to fraction form
    10,720.22/16,014.92 = 8,531.39/x
  3. Step 3: Cross multiply
    10,720.22x = 16,014.92 × 8,531.39
  4. Step 4: Simplify right side
    10,720.22x = 136,629,405.61
  5. Step 5: Solve for x
    x = 136,629,405.61/10,720.22
  6. Step 6: Final answer
    x = 12,745.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.