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Finding the Fourth Proportional to 12,614.10, 18,921.15 and 11,204.70

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Solution

The fourth proportional to 12,614.10, 18,921.15 and 11,204.70 is: 16,807.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,614.10 : 18,921.15 = 11,204.70 : x
  2. Step 2: Convert to fraction form
    12,614.10/18,921.15 = 11,204.70/x
  3. Step 3: Cross multiply
    12,614.10x = 18,921.15 × 11,204.70
  4. Step 4: Simplify right side
    12,614.10x = 212,005,809.41
  5. Step 5: Solve for x
    x = 212,005,809.41/12,614.10
  6. Step 6: Final answer
    x = 16,807.05

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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.