Home / 20,246.16-27,929.48-13,540.71

Finding the Fourth Proportional to 20,246.16, 27,929.48 and 13,540.71

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Solution

The fourth proportional to 20,246.16, 27,929.48 and 13,540.71 is: 18,679.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.16 : 27,929.48 = 13,540.71 : x
  2. Step 2: Convert to fraction form
    20,246.16/27,929.48 = 13,540.71/x
  3. Step 3: Cross multiply
    20,246.16x = 27,929.48 × 13,540.71
  4. Step 4: Simplify right side
    20,246.16x = 378,184,921.43
  5. Step 5: Solve for x
    x = 378,184,921.43/20,246.16
  6. Step 6: Final answer
    x = 18,679.34

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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.