Home / 21,191.12-29,242.76-11,759.60

Finding the Fourth Proportional to 21,191.12, 29,242.76 and 11,759.60

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Solution

The fourth proportional to 21,191.12, 29,242.76 and 11,759.60 is: 16,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.12 : 29,242.76 = 11,759.60 : x
  2. Step 2: Convert to fraction form
    21,191.12/29,242.76 = 11,759.60/x
  3. Step 3: Cross multiply
    21,191.12x = 29,242.76 × 11,759.60
  4. Step 4: Simplify right side
    21,191.12x = 343,883,160.50
  5. Step 5: Solve for x
    x = 343,883,160.50/21,191.12
  6. Step 6: Final answer
    x = 16,227.70

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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.