Home / 22,212.76-30,611.38-15,914.20

Finding the Fourth Proportional to 22,212.76, 30,611.38 and 15,914.20

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Solution

The fourth proportional to 22,212.76, 30,611.38 and 15,914.20 is: 21,931.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,212.76 : 30,611.38 = 15,914.20 : x
  2. Step 2: Convert to fraction form
    22,212.76/30,611.38 = 15,914.20/x
  3. Step 3: Cross multiply
    22,212.76x = 30,611.38 × 15,914.20
  4. Step 4: Simplify right side
    22,212.76x = 487,155,623.60
  5. Step 5: Solve for x
    x = 487,155,623.60/22,212.76
  6. Step 6: Final answer
    x = 21,931.34

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