Home / 20,330.48-30,474.84-7,847.12

Finding the Fourth Proportional to 20,330.48, 30,474.84 and 7,847.12

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Solution

The fourth proportional to 20,330.48, 30,474.84 and 7,847.12 is: 11,762.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.48 : 30,474.84 = 7,847.12 : x
  2. Step 2: Convert to fraction form
    20,330.48/30,474.84 = 7,847.12/x
  3. Step 3: Cross multiply
    20,330.48x = 30,474.84 × 7,847.12
  4. Step 4: Simplify right side
    20,330.48x = 239,139,726.46
  5. Step 5: Solve for x
    x = 239,139,726.46/20,330.48
  6. Step 6: Final answer
    x = 11,762.62

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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.