Home / 12,490.56-18,737.70-4,168.20

Finding the Fourth Proportional to 12,490.56, 18,737.70 and 4,168.20

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Solution

The fourth proportional to 12,490.56, 18,737.70 and 4,168.20 is: 6,252.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.56 : 18,737.70 = 4,168.20 : x
  2. Step 2: Convert to fraction form
    12,490.56/18,737.70 = 4,168.20/x
  3. Step 3: Cross multiply
    12,490.56x = 18,737.70 × 4,168.20
  4. Step 4: Simplify right side
    12,490.56x = 78,102,481.14
  5. Step 5: Solve for x
    x = 78,102,481.14/12,490.56
  6. Step 6: Final answer
    x = 6,252.92

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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.