Home / 21,955.59-33,105.60-20,118.51

Finding the Fourth Proportional to 21,955.59, 33,105.60 and 20,118.51

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Solution

The fourth proportional to 21,955.59, 33,105.60 and 20,118.51 is: 30,335.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.59 : 33,105.60 = 20,118.51 : x
  2. Step 2: Convert to fraction form
    21,955.59/33,105.60 = 20,118.51/x
  3. Step 3: Cross multiply
    21,955.59x = 33,105.60 × 20,118.51
  4. Step 4: Simplify right side
    21,955.59x = 666,035,344.66
  5. Step 5: Solve for x
    x = 666,035,344.66/21,955.59
  6. Step 6: Final answer
    x = 30,335.57

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Half scale
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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 (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.