Home / 26,010.81-38,991.09-11,980.49

Finding the Fourth Proportional to 26,010.81, 38,991.09 and 11,980.49

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Solution

The fourth proportional to 26,010.81, 38,991.09 and 11,980.49 is: 17,959.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,010.81 : 38,991.09 = 11,980.49 : x
  2. Step 2: Convert to fraction form
    26,010.81/38,991.09 = 11,980.49/x
  3. Step 3: Cross multiply
    26,010.81x = 38,991.09 × 11,980.49
  4. Step 4: Simplify right side
    26,010.81x = 467,132,168.88
  5. Step 5: Solve for x
    x = 467,132,168.88/26,010.81
  6. Step 6: Final answer
    x = 17,959.16

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Double scale
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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.