Home / 18,748.50-28,115.01-7,647.66

Finding the Fourth Proportional to 18,748.50, 28,115.01 and 7,647.66

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Solution

The fourth proportional to 18,748.50, 28,115.01 and 7,647.66 is: 11,468.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,748.50 : 28,115.01 = 7,647.66 : x
  2. Step 2: Convert to fraction form
    18,748.50/28,115.01 = 7,647.66/x
  3. Step 3: Cross multiply
    18,748.50x = 28,115.01 × 7,647.66
  4. Step 4: Simplify right side
    18,748.50x = 215,014,037.38
  5. Step 5: Solve for x
    x = 215,014,037.38/18,748.50
  6. Step 6: Final answer
    x = 11,468.33

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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.