Home / 18,720.90-28,073.01-7,025.85

Finding the Fourth Proportional to 18,720.90, 28,073.01 and 7,025.85

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Solution

The fourth proportional to 18,720.90, 28,073.01 and 7,025.85 is: 10,535.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.90 : 28,073.01 = 7,025.85 : x
  2. Step 2: Convert to fraction form
    18,720.90/28,073.01 = 7,025.85/x
  3. Step 3: Cross multiply
    18,720.90x = 28,073.01 × 7,025.85
  4. Step 4: Simplify right side
    18,720.90x = 197,236,757.31
  5. Step 5: Solve for x
    x = 197,236,757.31/18,720.90
  6. Step 6: Final answer
    x = 10,535.65

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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.