Home / 21,190.32-29,242.61-11,630.25

Finding the Fourth Proportional to 21,190.32, 29,242.61 and 11,630.25

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Solution

The fourth proportional to 21,190.32, 29,242.61 and 11,630.25 is: 16,049.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.32 : 29,242.61 = 11,630.25 : x
  2. Step 2: Convert to fraction form
    21,190.32/29,242.61 = 11,630.25/x
  3. Step 3: Cross multiply
    21,190.32x = 29,242.61 × 11,630.25
  4. Step 4: Simplify right side
    21,190.32x = 340,098,806.80
  5. Step 5: Solve for x
    x = 340,098,806.80/21,190.32
  6. Step 6: Final answer
    x = 16,049.72

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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.