Home / 15,899.20-21,937.98-11,911.84

Finding the Fourth Proportional to 15,899.20, 21,937.98 and 11,911.84

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Solution

The fourth proportional to 15,899.20, 21,937.98 and 11,911.84 is: 16,436.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.20 : 21,937.98 = 11,911.84 : x
  2. Step 2: Convert to fraction form
    15,899.20/21,937.98 = 11,911.84/x
  3. Step 3: Cross multiply
    15,899.20x = 21,937.98 × 11,911.84
  4. Step 4: Simplify right side
    15,899.20x = 261,321,707.68
  5. Step 5: Solve for x
    x = 261,321,707.68/15,899.20
  6. Step 6: Final answer
    x = 16,436.15

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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.