Home / 12,490.08-18,733.40-4,169.90

Finding the Fourth Proportional to 12,490.08, 18,733.40 and 4,169.90

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Solution

The fourth proportional to 12,490.08, 18,733.40 and 4,169.90 is: 6,254.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.08 : 18,733.40 = 4,169.90 : x
  2. Step 2: Convert to fraction form
    12,490.08/18,733.40 = 4,169.90/x
  3. Step 3: Cross multiply
    12,490.08x = 18,733.40 × 4,169.90
  4. Step 4: Simplify right side
    12,490.08x = 78,116,404.66
  5. Step 5: Solve for x
    x = 78,116,404.66/12,490.08
  6. Step 6: Final answer
    x = 6,254.28

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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.