Home / 21,760.79-30,029.85-12,329.33

Finding the Fourth Proportional to 21,760.79, 30,029.85 and 12,329.33

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Solution

The fourth proportional to 21,760.79, 30,029.85 and 12,329.33 is: 17,014.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.79 : 30,029.85 = 12,329.33 : x
  2. Step 2: Convert to fraction form
    21,760.79/30,029.85 = 12,329.33/x
  3. Step 3: Cross multiply
    21,760.79x = 30,029.85 × 12,329.33
  4. Step 4: Simplify right side
    21,760.79x = 370,247,780.35
  5. Step 5: Solve for x
    x = 370,247,780.35/21,760.79
  6. Step 6: Final answer
    x = 17,014.45

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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.