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Finding the Fourth Proportional to 26,608.80, 39,913.20 and 13,486.80

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Solution

The fourth proportional to 26,608.80, 39,913.20 and 13,486.80 is: 20,230.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,608.80 : 39,913.20 = 13,486.80 : x
  2. Step 2: Convert to fraction form
    26,608.80/39,913.20 = 13,486.80/x
  3. Step 3: Cross multiply
    26,608.80x = 39,913.20 × 13,486.80
  4. Step 4: Simplify right side
    26,608.80x = 538,301,345.76
  5. Step 5: Solve for x
    x = 538,301,345.76/26,608.80
  6. Step 6: Final answer
    x = 20,230.20

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Similar ratio
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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.