Home / 20,009.78-30,004.38-11,706.02

Finding the Fourth Proportional to 20,009.78, 30,004.38 and 11,706.02

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Solution

The fourth proportional to 20,009.78, 30,004.38 and 11,706.02 is: 17,553.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.78 : 30,004.38 = 11,706.02 : x
  2. Step 2: Convert to fraction form
    20,009.78/30,004.38 = 11,706.02/x
  3. Step 3: Cross multiply
    20,009.78x = 30,004.38 × 11,706.02
  4. Step 4: Simplify right side
    20,009.78x = 351,231,722.35
  5. Step 5: Solve for x
    x = 351,231,722.35/20,009.78
  6. Step 6: Final answer
    x = 17,553.01

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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.