Home / 13,219.40-18,233.25-8,499.17

Finding the Fourth Proportional to 13,219.40, 18,233.25 and 8,499.17

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Solution

The fourth proportional to 13,219.40, 18,233.25 and 8,499.17 is: 11,722.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.40 : 18,233.25 = 8,499.17 : x
  2. Step 2: Convert to fraction form
    13,219.40/18,233.25 = 8,499.17/x
  3. Step 3: Cross multiply
    13,219.40x = 18,233.25 × 8,499.17
  4. Step 4: Simplify right side
    13,219.40x = 154,967,491.40
  5. Step 5: Solve for x
    x = 154,967,491.40/13,219.40
  6. Step 6: Final answer
    x = 11,722.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.