Home / 12,215.32-18,323.75-3,450.91

Finding the Fourth Proportional to 12,215.32, 18,323.75 and 3,450.91

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Solution

The fourth proportional to 12,215.32, 18,323.75 and 3,450.91 is: 5,176.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.32 : 18,323.75 = 3,450.91 : x
  2. Step 2: Convert to fraction form
    12,215.32/18,323.75 = 3,450.91/x
  3. Step 3: Cross multiply
    12,215.32x = 18,323.75 × 3,450.91
  4. Step 4: Simplify right side
    12,215.32x = 63,233,612.11
  5. Step 5: Solve for x
    x = 63,233,612.11/12,215.32
  6. Step 6: Final answer
    x = 5,176.58

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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.