Home / 18,515.79-27,766.79-6,666.35

Finding the Fourth Proportional to 18,515.79, 27,766.79 and 6,666.35

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Solution

The fourth proportional to 18,515.79, 27,766.79 and 6,666.35 is: 9,997.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.79 : 27,766.79 = 6,666.35 : x
  2. Step 2: Convert to fraction form
    18,515.79/27,766.79 = 6,666.35/x
  3. Step 3: Cross multiply
    18,515.79x = 27,766.79 × 6,666.35
  4. Step 4: Simplify right side
    18,515.79x = 185,103,001.68
  5. Step 5: Solve for x
    x = 185,103,001.68/18,515.79
  6. Step 6: Final answer
    x = 9,997.04

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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.