Home / 21,981.63-30,334.68-11,910.18

Finding the Fourth Proportional to 21,981.63, 30,334.68 and 11,910.18

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Solution

The fourth proportional to 21,981.63, 30,334.68 and 11,910.18 is: 16,436.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.63 : 30,334.68 = 11,910.18 : x
  2. Step 2: Convert to fraction form
    21,981.63/30,334.68 = 11,910.18/x
  3. Step 3: Cross multiply
    21,981.63x = 30,334.68 × 11,910.18
  4. Step 4: Simplify right side
    21,981.63x = 361,291,499.04
  5. Step 5: Solve for x
    x = 361,291,499.04/21,981.63
  6. Step 6: Final answer
    x = 16,436.06

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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.