Home / 15,766.94-21,759.93-11,781.13

Finding the Fourth Proportional to 15,766.94, 21,759.93 and 11,781.13

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Solution

The fourth proportional to 15,766.94, 21,759.93 and 11,781.13 is: 16,259.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,766.94 : 21,759.93 = 11,781.13 : x
  2. Step 2: Convert to fraction form
    15,766.94/21,759.93 = 11,781.13/x
  3. Step 3: Cross multiply
    15,766.94x = 21,759.93 × 11,781.13
  4. Step 4: Simplify right side
    15,766.94x = 256,356,625.75
  5. Step 5: Solve for x
    x = 256,356,625.75/15,766.94
  6. Step 6: Final answer
    x = 16,259.12

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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.