Home / 15,742.94-21,725.15-11,727.77

Finding the Fourth Proportional to 15,742.94, 21,725.15 and 11,727.77

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Solution

The fourth proportional to 15,742.94, 21,725.15 and 11,727.77 is: 16,184.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.94 : 21,725.15 = 11,727.77 : x
  2. Step 2: Convert to fraction form
    15,742.94/21,725.15 = 11,727.77/x
  3. Step 3: Cross multiply
    15,742.94x = 21,725.15 × 11,727.77
  4. Step 4: Simplify right side
    15,742.94x = 254,787,395.15
  5. Step 5: Solve for x
    x = 254,787,395.15/15,742.94
  6. Step 6: Final answer
    x = 16,184.24

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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.