Home / 12,119.93-16,725.71-6,742.79

Finding the Fourth Proportional to 12,119.93, 16,725.71 and 6,742.79

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Solution

The fourth proportional to 12,119.93, 16,725.71 and 6,742.79 is: 9,305.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.93 : 16,725.71 = 6,742.79 : x
  2. Step 2: Convert to fraction form
    12,119.93/16,725.71 = 6,742.79/x
  3. Step 3: Cross multiply
    12,119.93x = 16,725.71 × 6,742.79
  4. Step 4: Simplify right side
    12,119.93x = 112,777,916.42
  5. Step 5: Solve for x
    x = 112,777,916.42/12,119.93
  6. Step 6: Final answer
    x = 9,305.17

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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.