Home / 21,760.25-30,030.36-12,331.85

Finding the Fourth Proportional to 21,760.25, 30,030.36 and 12,331.85

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Solution

The fourth proportional to 21,760.25, 30,030.36 and 12,331.85 is: 17,018.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.25 : 30,030.36 = 12,331.85 : x
  2. Step 2: Convert to fraction form
    21,760.25/30,030.36 = 12,331.85/x
  3. Step 3: Cross multiply
    21,760.25x = 30,030.36 × 12,331.85
  4. Step 4: Simplify right side
    21,760.25x = 370,329,894.97
  5. Step 5: Solve for x
    x = 370,329,894.97/21,760.25
  6. Step 6: Final answer
    x = 17,018.64

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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.