Home / 21,760.90-30,029.47-12,329.46

Finding the Fourth Proportional to 21,760.90, 30,029.47 and 12,329.46

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Solution

The fourth proportional to 21,760.90, 30,029.47 and 12,329.46 is: 17,014.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.90 : 30,029.47 = 12,329.46 : x
  2. Step 2: Convert to fraction form
    21,760.90/30,029.47 = 12,329.46/x
  3. Step 3: Cross multiply
    21,760.90x = 30,029.47 × 12,329.46
  4. Step 4: Simplify right side
    21,760.90x = 370,247,118.36
  5. Step 5: Solve for x
    x = 370,247,118.36/21,760.90
  6. Step 6: Final answer
    x = 17,014.33

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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.