Home / 9,215.24-13,790.40-7,932.20

Finding the Fourth Proportional to 9,215.24, 13,790.40 and 7,932.20

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Solution

The fourth proportional to 9,215.24, 13,790.40 and 7,932.20 is: 11,870.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.24 : 13,790.40 = 7,932.20 : x
  2. Step 2: Convert to fraction form
    9,215.24/13,790.40 = 7,932.20/x
  3. Step 3: Cross multiply
    9,215.24x = 13,790.40 × 7,932.20
  4. Step 4: Simplify right side
    9,215.24x = 109,388,210.88
  5. Step 5: Solve for x
    x = 109,388,210.88/9,215.24
  6. Step 6: Final answer
    x = 11,870.36

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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.