Home / 20,530.65-30,782.30-7,381.32

Finding the Fourth Proportional to 20,530.65, 30,782.30 and 7,381.32

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Solution

The fourth proportional to 20,530.65, 30,782.30 and 7,381.32 is: 11,067.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.65 : 30,782.30 = 7,381.32 : x
  2. Step 2: Convert to fraction form
    20,530.65/30,782.30 = 7,381.32/x
  3. Step 3: Cross multiply
    20,530.65x = 30,782.30 × 7,381.32
  4. Step 4: Simplify right side
    20,530.65x = 227,213,969.73
  5. Step 5: Solve for x
    x = 227,213,969.73/20,530.65
  6. Step 6: Final answer
    x = 11,067.06

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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.