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Finding the Fourth Proportional to 20,154.02, 27,810.02 and 11,200.90

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Solution

The fourth proportional to 20,154.02, 27,810.02 and 11,200.90 is: 15,455.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.02 : 27,810.02 = 11,200.90 : x
  2. Step 2: Convert to fraction form
    20,154.02/27,810.02 = 11,200.90/x
  3. Step 3: Cross multiply
    20,154.02x = 27,810.02 × 11,200.90
  4. Step 4: Simplify right side
    20,154.02x = 311,497,253.02
  5. Step 5: Solve for x
    x = 311,497,253.02/20,154.02
  6. Step 6: Final answer
    x = 15,455.84

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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.