Home / 12,621.30-18,933.12-4,298.52

Finding the Fourth Proportional to 12,621.30, 18,933.12 and 4,298.52

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Solution

The fourth proportional to 12,621.30, 18,933.12 and 4,298.52 is: 6,448.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.30 : 18,933.12 = 4,298.52 : x
  2. Step 2: Convert to fraction form
    12,621.30/18,933.12 = 4,298.52/x
  3. Step 3: Cross multiply
    12,621.30x = 18,933.12 × 4,298.52
  4. Step 4: Simplify right side
    12,621.30x = 81,384,394.98
  5. Step 5: Solve for x
    x = 81,384,394.98/12,621.30
  6. Step 6: Final answer
    x = 6,448.18

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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.