Home / 12,543.15-17,321.27-8,074.67

Finding the Fourth Proportional to 12,543.15, 17,321.27 and 8,074.67

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Solution

The fourth proportional to 12,543.15, 17,321.27 and 8,074.67 is: 11,150.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.15 : 17,321.27 = 8,074.67 : x
  2. Step 2: Convert to fraction form
    12,543.15/17,321.27 = 8,074.67/x
  3. Step 3: Cross multiply
    12,543.15x = 17,321.27 × 8,074.67
  4. Step 4: Simplify right side
    12,543.15x = 139,863,539.23
  5. Step 5: Solve for x
    x = 139,863,539.23/12,543.15
  6. Step 6: Final answer
    x = 11,150.59

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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.