Home / 12,215.24-18,330.30-4,423.40

Finding the Fourth Proportional to 12,215.24, 18,330.30 and 4,423.40

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Solution

The fourth proportional to 12,215.24, 18,330.30 and 4,423.40 is: 6,637.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.24 : 18,330.30 = 4,423.40 : x
  2. Step 2: Convert to fraction form
    12,215.24/18,330.30 = 4,423.40/x
  3. Step 3: Cross multiply
    12,215.24x = 18,330.30 × 4,423.40
  4. Step 4: Simplify right side
    12,215.24x = 81,082,249.02
  5. Step 5: Solve for x
    x = 81,082,249.02/12,215.24
  6. Step 6: Final answer
    x = 6,637.79

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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.