Home / 18,669.20-28,006.85-5,522.90

Finding the Fourth Proportional to 18,669.20, 28,006.85 and 5,522.90

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Solution

The fourth proportional to 18,669.20, 28,006.85 and 5,522.90 is: 8,285.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.20 : 28,006.85 = 5,522.90 : x
  2. Step 2: Convert to fraction form
    18,669.20/28,006.85 = 5,522.90/x
  3. Step 3: Cross multiply
    18,669.20x = 28,006.85 × 5,522.90
  4. Step 4: Simplify right side
    18,669.20x = 154,679,031.87
  5. Step 5: Solve for x
    x = 154,679,031.87/18,669.20
  6. Step 6: Final answer
    x = 8,285.25

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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.