Home / 20,020.88-29,979.48-13,800.08

Finding the Fourth Proportional to 20,020.88, 29,979.48 and 13,800.08

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Solution

The fourth proportional to 20,020.88, 29,979.48 and 13,800.08 is: 20,664.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.88 : 29,979.48 = 13,800.08 : x
  2. Step 2: Convert to fraction form
    20,020.88/29,979.48 = 13,800.08/x
  3. Step 3: Cross multiply
    20,020.88x = 29,979.48 × 13,800.08
  4. Step 4: Simplify right side
    20,020.88x = 413,719,222.36
  5. Step 5: Solve for x
    x = 413,719,222.36/20,020.88
  6. Step 6: Final answer
    x = 20,664.39

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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.