Home / 18,288.80-27,433.20-11,290.40

Finding the Fourth Proportional to 18,288.80, 27,433.20 and 11,290.40

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Solution

The fourth proportional to 18,288.80, 27,433.20 and 11,290.40 is: 16,935.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.80 : 27,433.20 = 11,290.40 : x
  2. Step 2: Convert to fraction form
    18,288.80/27,433.20 = 11,290.40/x
  3. Step 3: Cross multiply
    18,288.80x = 27,433.20 × 11,290.40
  4. Step 4: Simplify right side
    18,288.80x = 309,731,801.28
  5. Step 5: Solve for x
    x = 309,731,801.28/18,288.80
  6. Step 6: Final answer
    x = 16,935.60

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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.