Home / 12,215.30-18,323.02-3,450.29

Finding the Fourth Proportional to 12,215.30, 18,323.02 and 3,450.29

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Solution

The fourth proportional to 12,215.30, 18,323.02 and 3,450.29 is: 5,175.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.30 : 18,323.02 = 3,450.29 : x
  2. Step 2: Convert to fraction form
    12,215.30/18,323.02 = 3,450.29/x
  3. Step 3: Cross multiply
    12,215.30x = 18,323.02 × 3,450.29
  4. Step 4: Simplify right side
    12,215.30x = 63,219,714.08
  5. Step 5: Solve for x
    x = 63,219,714.08/12,215.30
  6. Step 6: Final answer
    x = 5,175.45

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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.