Home / 12,490.98-18,739.17-4,171.74

Finding the Fourth Proportional to 12,490.98, 18,739.17 and 4,171.74

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Solution

The fourth proportional to 12,490.98, 18,739.17 and 4,171.74 is: 6,258.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.98 : 18,739.17 = 4,171.74 : x
  2. Step 2: Convert to fraction form
    12,490.98/18,739.17 = 4,171.74/x
  3. Step 3: Cross multiply
    12,490.98x = 18,739.17 × 4,171.74
  4. Step 4: Simplify right side
    12,490.98x = 78,174,945.06
  5. Step 5: Solve for x
    x = 78,174,945.06/12,490.98
  6. Step 6: Final answer
    x = 6,258.51

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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.