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Finding the Fourth Proportional to 22,212.84, 30,611.30 and 15,914.28

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Solution

The fourth proportional to 22,212.84, 30,611.30 and 15,914.28 is: 21,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,212.84 : 30,611.30 = 15,914.28 : x
  2. Step 2: Convert to fraction form
    22,212.84/30,611.30 = 15,914.28/x
  3. Step 3: Cross multiply
    22,212.84x = 30,611.30 × 15,914.28
  4. Step 4: Simplify right side
    22,212.84x = 487,156,799.36
  5. Step 5: Solve for x
    x = 487,156,799.36/22,212.84
  6. Step 6: Final answer
    x = 21,931.32

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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.