Home / 26,231.20-39,346.80-13,109.20

Finding the Fourth Proportional to 26,231.20, 39,346.80 and 13,109.20

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Solution

The fourth proportional to 26,231.20, 39,346.80 and 13,109.20 is: 19,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,231.20 : 39,346.80 = 13,109.20 : x
  2. Step 2: Convert to fraction form
    26,231.20/39,346.80 = 13,109.20/x
  3. Step 3: Cross multiply
    26,231.20x = 39,346.80 × 13,109.20
  4. Step 4: Simplify right side
    26,231.20x = 515,805,070.56
  5. Step 5: Solve for x
    x = 515,805,070.56/26,231.20
  6. Step 6: Final answer
    x = 19,663.80

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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.