Home / 18,666.28-27,990.90-8,135.86

Finding the Fourth Proportional to 18,666.28, 27,990.90 and 8,135.86

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Solution

The fourth proportional to 18,666.28, 27,990.90 and 8,135.86 is: 12,200.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.28 : 27,990.90 = 8,135.86 : x
  2. Step 2: Convert to fraction form
    18,666.28/27,990.90 = 8,135.86/x
  3. Step 3: Cross multiply
    18,666.28x = 27,990.90 × 8,135.86
  4. Step 4: Simplify right side
    18,666.28x = 227,730,043.67
  5. Step 5: Solve for x
    x = 227,730,043.67/18,666.28
  6. Step 6: Final answer
    x = 12,200.08

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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.