Home / 21,960.35-30,305.06-11,888.52

Finding the Fourth Proportional to 21,960.35, 30,305.06 and 11,888.52

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Solution

The fourth proportional to 21,960.35, 30,305.06 and 11,888.52 is: 16,406.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.35 : 30,305.06 = 11,888.52 : x
  2. Step 2: Convert to fraction form
    21,960.35/30,305.06 = 11,888.52/x
  3. Step 3: Cross multiply
    21,960.35x = 30,305.06 × 11,888.52
  4. Step 4: Simplify right side
    21,960.35x = 360,282,311.91
  5. Step 5: Solve for x
    x = 360,282,311.91/21,960.35
  6. Step 6: Final answer
    x = 16,406.04

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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.