Home / 21,880.32-30,197.37-12,320.29

Finding the Fourth Proportional to 21,880.32, 30,197.37 and 12,320.29

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Solution

The fourth proportional to 21,880.32, 30,197.37 and 12,320.29 is: 17,003.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.32 : 30,197.37 = 12,320.29 : x
  2. Step 2: Convert to fraction form
    21,880.32/30,197.37 = 12,320.29/x
  3. Step 3: Cross multiply
    21,880.32x = 30,197.37 × 12,320.29
  4. Step 4: Simplify right side
    21,880.32x = 372,040,355.64
  5. Step 5: Solve for x
    x = 372,040,355.64/21,880.32
  6. Step 6: Final answer
    x = 17,003.42

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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.