Home / 21,980.03-30,332.45-11,908.54

Finding the Fourth Proportional to 21,980.03, 30,332.45 and 11,908.54

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Solution

The fourth proportional to 21,980.03, 30,332.45 and 11,908.54 is: 16,433.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980.03 : 30,332.45 = 11,908.54 : x
  2. Step 2: Convert to fraction form
    21,980.03/30,332.45 = 11,908.54/x
  3. Step 3: Cross multiply
    21,980.03x = 30,332.45 × 11,908.54
  4. Step 4: Simplify right side
    21,980.03x = 361,215,058.75
  5. Step 5: Solve for x
    x = 361,215,058.75/21,980.03
  6. Step 6: Final answer
    x = 16,433.79

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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.