Home / 18,660.15-27,988.20-5,333.94

Finding the Fourth Proportional to 18,660.15, 27,988.20 and 5,333.94

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Solution

The fourth proportional to 18,660.15, 27,988.20 and 5,333.94 is: 8,000.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.15 : 27,988.20 = 5,333.94 : x
  2. Step 2: Convert to fraction form
    18,660.15/27,988.20 = 5,333.94/x
  3. Step 3: Cross multiply
    18,660.15x = 27,988.20 × 5,333.94
  4. Step 4: Simplify right side
    18,660.15x = 149,287,379.51
  5. Step 5: Solve for x
    x = 149,287,379.51/18,660.15
  6. Step 6: Final answer
    x = 8,000.33

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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.