Home / 20,775.24-31,144.32-7,624.56

Finding the Fourth Proportional to 20,775.24, 31,144.32 and 7,624.56

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Solution

The fourth proportional to 20,775.24, 31,144.32 and 7,624.56 is: 11,430.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.24 : 31,144.32 = 7,624.56 : x
  2. Step 2: Convert to fraction form
    20,775.24/31,144.32 = 7,624.56/x
  3. Step 3: Cross multiply
    20,775.24x = 31,144.32 × 7,624.56
  4. Step 4: Simplify right side
    20,775.24x = 237,461,736.50
  5. Step 5: Solve for x
    x = 237,461,736.50/20,775.24
  6. Step 6: Final answer
    x = 11,430.04

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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.