Home / 17,378.80-23,979.40-11,000.90

Finding the Fourth Proportional to 17,378.80, 23,979.40 and 11,000.90

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Solution

The fourth proportional to 17,378.80, 23,979.40 and 11,000.90 is: 15,179.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,378.80 : 23,979.40 = 11,000.90 : x
  2. Step 2: Convert to fraction form
    17,378.80/23,979.40 = 11,000.90/x
  3. Step 3: Cross multiply
    17,378.80x = 23,979.40 × 11,000.90
  4. Step 4: Simplify right side
    17,378.80x = 263,794,981.46
  5. Step 5: Solve for x
    x = 263,794,981.46/17,378.80
  6. Step 6: Final answer
    x = 15,179.13

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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.