Home / 14,945.90-20,625.35-8,231.51

Finding the Fourth Proportional to 14,945.90, 20,625.35 and 8,231.51

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Solution

The fourth proportional to 14,945.90, 20,625.35 and 8,231.51 is: 11,359.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,945.90 : 20,625.35 = 8,231.51 : x
  2. Step 2: Convert to fraction form
    14,945.90/20,625.35 = 8,231.51/x
  3. Step 3: Cross multiply
    14,945.90x = 20,625.35 × 8,231.51
  4. Step 4: Simplify right side
    14,945.90x = 169,777,733.62
  5. Step 5: Solve for x
    x = 169,777,733.62/14,945.90
  6. Step 6: Final answer
    x = 11,359.49

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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.