Home / 20,790.28-31,166.34-7,632.64

Finding the Fourth Proportional to 20,790.28, 31,166.34 and 7,632.64

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Solution

The fourth proportional to 20,790.28, 31,166.34 and 7,632.64 is: 11,441.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.28 : 31,166.34 = 7,632.64 : x
  2. Step 2: Convert to fraction form
    20,790.28/31,166.34 = 7,632.64/x
  3. Step 3: Cross multiply
    20,790.28x = 31,166.34 × 7,632.64
  4. Step 4: Simplify right side
    20,790.28x = 237,881,453.34
  5. Step 5: Solve for x
    x = 237,881,453.34/20,790.28
  6. Step 6: Final answer
    x = 11,441.96

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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.