Home / 19,221.80-28,775.10-18,082.60

Finding the Fourth Proportional to 19,221.80, 28,775.10 and 18,082.60

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Solution

The fourth proportional to 19,221.80, 28,775.10 and 18,082.60 is: 27,069.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.80 : 28,775.10 = 18,082.60 : x
  2. Step 2: Convert to fraction form
    19,221.80/28,775.10 = 18,082.60/x
  3. Step 3: Cross multiply
    19,221.80x = 28,775.10 × 18,082.60
  4. Step 4: Simplify right side
    19,221.80x = 520,328,623.26
  5. Step 5: Solve for x
    x = 520,328,623.26/19,221.80
  6. Step 6: Final answer
    x = 27,069.71

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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.