Home / 21,632.64-29,857.68-13,669.80

Finding the Fourth Proportional to 21,632.64, 29,857.68 and 13,669.80

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Solution

The fourth proportional to 21,632.64, 29,857.68 and 13,669.80 is: 18,867.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,632.64 : 29,857.68 = 13,669.80 : x
  2. Step 2: Convert to fraction form
    21,632.64/29,857.68 = 13,669.80/x
  3. Step 3: Cross multiply
    21,632.64x = 29,857.68 × 13,669.80
  4. Step 4: Simplify right side
    21,632.64x = 408,148,514.06
  5. Step 5: Solve for x
    x = 408,148,514.06/21,632.64
  6. Step 6: Final answer
    x = 18,867.25

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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.