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Finding the Fourth Proportional to 27,101.60, 40,652.40 and 18,807.20

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Solution

The fourth proportional to 27,101.60, 40,652.40 and 18,807.20 is: 28,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,101.60 : 40,652.40 = 18,807.20 : x
  2. Step 2: Convert to fraction form
    27,101.60/40,652.40 = 18,807.20/x
  3. Step 3: Cross multiply
    27,101.60x = 40,652.40 × 18,807.20
  4. Step 4: Simplify right side
    27,101.60x = 764,557,817.28
  5. Step 5: Solve for x
    x = 764,557,817.28/27,101.60
  6. Step 6: Final answer
    x = 28,210.80

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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.