Home / 20,301.36-30,429.68-13,278.48

Finding the Fourth Proportional to 20,301.36, 30,429.68 and 13,278.48

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Solution

The fourth proportional to 20,301.36, 30,429.68 and 13,278.48 is: 19,903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.36 : 30,429.68 = 13,278.48 : x
  2. Step 2: Convert to fraction form
    20,301.36/30,429.68 = 13,278.48/x
  3. Step 3: Cross multiply
    20,301.36x = 30,429.68 × 13,278.48
  4. Step 4: Simplify right side
    20,301.36x = 404,059,897.29
  5. Step 5: Solve for x
    x = 404,059,897.29/20,301.36
  6. Step 6: Final answer
    x = 19,903.10

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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.