Home / 20,147.60-27,802.32-11,194.40

Finding the Fourth Proportional to 20,147.60, 27,802.32 and 11,194.40

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Solution

The fourth proportional to 20,147.60, 27,802.32 and 11,194.40 is: 15,447.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.60 : 27,802.32 = 11,194.40 : x
  2. Step 2: Convert to fraction form
    20,147.60/27,802.32 = 11,194.40/x
  3. Step 3: Cross multiply
    20,147.60x = 27,802.32 × 11,194.40
  4. Step 4: Simplify right side
    20,147.60x = 311,230,291.01
  5. Step 5: Solve for x
    x = 311,230,291.01/20,147.60
  6. Step 6: Final answer
    x = 15,447.51

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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.