Home / 21,980.57-30,333.08-11,908.97

Finding the Fourth Proportional to 21,980.57, 30,333.08 and 11,908.97

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Solution

The fourth proportional to 21,980.57, 30,333.08 and 11,908.97 is: 16,434.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980.57 : 30,333.08 = 11,908.97 : x
  2. Step 2: Convert to fraction form
    21,980.57/30,333.08 = 11,908.97/x
  3. Step 3: Cross multiply
    21,980.57x = 30,333.08 × 11,908.97
  4. Step 4: Simplify right side
    21,980.57x = 361,235,756.02
  5. Step 5: Solve for x
    x = 361,235,756.02/21,980.57
  6. Step 6: Final answer
    x = 16,434.33

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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.