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Finding the Fourth Proportional to 22,101.40, 33,115.65 and 18,966.70

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Solution

The fourth proportional to 22,101.40, 33,115.65 and 18,966.70 is: 28,418.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,101.40 : 33,115.65 = 18,966.70 : x
  2. Step 2: Convert to fraction form
    22,101.40/33,115.65 = 18,966.70/x
  3. Step 3: Cross multiply
    22,101.40x = 33,115.65 × 18,966.70
  4. Step 4: Simplify right side
    22,101.40x = 628,094,598.86
  5. Step 5: Solve for x
    x = 628,094,598.86/22,101.40
  6. Step 6: Final answer
    x = 28,418.77

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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.