Home / 20,301.64-28,021.92-13,929.26

Finding the Fourth Proportional to 20,301.64, 28,021.92 and 13,929.26

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Solution

The fourth proportional to 20,301.64, 28,021.92 and 13,929.26 is: 19,226.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.64 : 28,021.92 = 13,929.26 : x
  2. Step 2: Convert to fraction form
    20,301.64/28,021.92 = 13,929.26/x
  3. Step 3: Cross multiply
    20,301.64x = 28,021.92 × 13,929.26
  4. Step 4: Simplify right side
    20,301.64x = 390,324,679.43
  5. Step 5: Solve for x
    x = 390,324,679.43/20,301.64
  6. Step 6: Final answer
    x = 19,226.27

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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.