Home / 12,490.77-17,237.70-8,245.56

Finding the Fourth Proportional to 12,490.77, 17,237.70 and 8,245.56

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Solution

The fourth proportional to 12,490.77, 17,237.70 and 8,245.56 is: 11,379.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.77 : 17,237.70 = 8,245.56 : x
  2. Step 2: Convert to fraction form
    12,490.77/17,237.70 = 8,245.56/x
  3. Step 3: Cross multiply
    12,490.77x = 17,237.70 × 8,245.56
  4. Step 4: Simplify right side
    12,490.77x = 142,134,489.61
  5. Step 5: Solve for x
    x = 142,134,489.61/12,490.77
  6. Step 6: Final answer
    x = 11,379.16

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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.