Home / 20,485.71-30,729.31-7,338.06

Finding the Fourth Proportional to 20,485.71, 30,729.31 and 7,338.06

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Solution

The fourth proportional to 20,485.71, 30,729.31 and 7,338.06 is: 11,007.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.71 : 30,729.31 = 7,338.06 : x
  2. Step 2: Convert to fraction form
    20,485.71/30,729.31 = 7,338.06/x
  3. Step 3: Cross multiply
    20,485.71x = 30,729.31 × 7,338.06
  4. Step 4: Simplify right side
    20,485.71x = 225,493,502.19
  5. Step 5: Solve for x
    x = 225,493,502.19/20,485.71
  6. Step 6: Final answer
    x = 11,007.36

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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.