Home / 20,579.10-30,901.05-11,831.10

Finding the Fourth Proportional to 20,579.10, 30,901.05 and 11,831.10

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Solution

The fourth proportional to 20,579.10, 30,901.05 and 11,831.10 is: 17,765.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.10 : 30,901.05 = 11,831.10 : x
  2. Step 2: Convert to fraction form
    20,579.10/30,901.05 = 11,831.10/x
  3. Step 3: Cross multiply
    20,579.10x = 30,901.05 × 11,831.10
  4. Step 4: Simplify right side
    20,579.10x = 365,593,412.66
  5. Step 5: Solve for x
    x = 365,593,412.66/20,579.10
  6. Step 6: Final answer
    x = 17,765.28

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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.