Home / 18,219.24-27,378.24-9,905.40

Finding the Fourth Proportional to 18,219.24, 27,378.24 and 9,905.40

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Solution

The fourth proportional to 18,219.24, 27,378.24 and 9,905.40 is: 14,884.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.24 : 27,378.24 = 9,905.40 : x
  2. Step 2: Convert to fraction form
    18,219.24/27,378.24 = 9,905.40/x
  3. Step 3: Cross multiply
    18,219.24x = 27,378.24 × 9,905.40
  4. Step 4: Simplify right side
    18,219.24x = 271,192,418.50
  5. Step 5: Solve for x
    x = 271,192,418.50/18,219.24
  6. Step 6: Final answer
    x = 14,884.95

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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.