Home / 20,105.48-27,744.28-11,152.48

Finding the Fourth Proportional to 20,105.48, 27,744.28 and 11,152.48

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Solution

The fourth proportional to 20,105.48, 27,744.28 and 11,152.48 is: 15,389.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.48 : 27,744.28 = 11,152.48 : x
  2. Step 2: Convert to fraction form
    20,105.48/27,744.28 = 11,152.48/x
  3. Step 3: Cross multiply
    20,105.48x = 27,744.28 × 11,152.48
  4. Step 4: Simplify right side
    20,105.48x = 309,417,527.81
  5. Step 5: Solve for x
    x = 309,417,527.81/20,105.48
  6. Step 6: Final answer
    x = 15,389.71

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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.