Home / 22,021.08-30,383.82-12,587.28

Finding the Fourth Proportional to 22,021.08, 30,383.82 and 12,587.28

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Solution

The fourth proportional to 22,021.08, 30,383.82 and 12,587.28 is: 17,367.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,021.08 : 30,383.82 = 12,587.28 : x
  2. Step 2: Convert to fraction form
    22,021.08/30,383.82 = 12,587.28/x
  3. Step 3: Cross multiply
    22,021.08x = 30,383.82 × 12,587.28
  4. Step 4: Simplify right side
    22,021.08x = 382,449,649.81
  5. Step 5: Solve for x
    x = 382,449,649.81/22,021.08
  6. Step 6: Final answer
    x = 17,367.43

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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.