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Finding the Fourth Proportional to 18,614.22, 27,897.63 and 8,731.77

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Solution

The fourth proportional to 18,614.22, 27,897.63 and 8,731.77 is: 13,086.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,614.22 : 27,897.63 = 8,731.77 : x
  2. Step 2: Convert to fraction form
    18,614.22/27,897.63 = 8,731.77/x
  3. Step 3: Cross multiply
    18,614.22x = 27,897.63 × 8,731.77
  4. Step 4: Simplify right side
    18,614.22x = 243,595,688.71
  5. Step 5: Solve for x
    x = 243,595,688.71/18,614.22
  6. Step 6: Final answer
    x = 13,086.54

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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.