Home / 12,145.87-16,761.52-6,840.88

Finding the Fourth Proportional to 12,145.87, 16,761.52 and 6,840.88

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Solution

The fourth proportional to 12,145.87, 16,761.52 and 6,840.88 is: 9,440.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.87 : 16,761.52 = 6,840.88 : x
  2. Step 2: Convert to fraction form
    12,145.87/16,761.52 = 6,840.88/x
  3. Step 3: Cross multiply
    12,145.87x = 16,761.52 × 6,840.88
  4. Step 4: Simplify right side
    12,145.87x = 114,663,487.93
  5. Step 5: Solve for x
    x = 114,663,487.93/12,145.87
  6. Step 6: Final answer
    x = 9,440.53

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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.