Home / 21,191.30-29,244.02-11,759.86

Finding the Fourth Proportional to 21,191.30, 29,244.02 and 11,759.86

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Solution

The fourth proportional to 21,191.30, 29,244.02 and 11,759.86 is: 16,228.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.30 : 29,244.02 = 11,759.86 : x
  2. Step 2: Convert to fraction form
    21,191.30/29,244.02 = 11,759.86/x
  3. Step 3: Cross multiply
    21,191.30x = 29,244.02 × 11,759.86
  4. Step 4: Simplify right side
    21,191.30x = 343,905,581.04
  5. Step 5: Solve for x
    x = 343,905,581.04/21,191.30
  6. Step 6: Final answer
    x = 16,228.62

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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.