Home / 20,775.61-31,162.36-7,626.97

Finding the Fourth Proportional to 20,775.61, 31,162.36 and 7,626.97

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Solution

The fourth proportional to 20,775.61, 31,162.36 and 7,626.97 is: 11,440.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.61 : 31,162.36 = 7,626.97 : x
  2. Step 2: Convert to fraction form
    20,775.61/31,162.36 = 7,626.97/x
  3. Step 3: Cross multiply
    20,775.61x = 31,162.36 × 7,626.97
  4. Step 4: Simplify right side
    20,775.61x = 237,674,384.85
  5. Step 5: Solve for x
    x = 237,674,384.85/20,775.61
  6. Step 6: Final answer
    x = 11,440.07

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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.