Home / 18,515.42-27,775.30-6,503.88

Finding the Fourth Proportional to 18,515.42, 27,775.30 and 6,503.88

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Solution

The fourth proportional to 18,515.42, 27,775.30 and 6,503.88 is: 9,756.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.42 : 27,775.30 = 6,503.88 : x
  2. Step 2: Convert to fraction form
    18,515.42/27,775.30 = 6,503.88/x
  3. Step 3: Cross multiply
    18,515.42x = 27,775.30 × 6,503.88
  4. Step 4: Simplify right side
    18,515.42x = 180,647,218.16
  5. Step 5: Solve for x
    x = 180,647,218.16/18,515.42
  6. Step 6: Final answer
    x = 9,756.58

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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.