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Finding the Fourth Proportional to 18,676.42, 27,807.28 and 18,414.90

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Solution

The fourth proportional to 18,676.42, 27,807.28 and 18,414.90 is: 27,417.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.42 : 27,807.28 = 18,414.90 : x
  2. Step 2: Convert to fraction form
    18,676.42/27,807.28 = 18,414.90/x
  3. Step 3: Cross multiply
    18,676.42x = 27,807.28 × 18,414.90
  4. Step 4: Simplify right side
    18,676.42x = 512,068,280.47
  5. Step 5: Solve for x
    x = 512,068,280.47/18,676.42
  6. Step 6: Final answer
    x = 27,417.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.