Home / 11,727.90-16,184.34-6,422.40

Finding the Fourth Proportional to 11,727.90, 16,184.34 and 6,422.40

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Solution

The fourth proportional to 11,727.90, 16,184.34 and 6,422.40 is: 8,862.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,727.90 : 16,184.34 = 6,422.40 : x
  2. Step 2: Convert to fraction form
    11,727.90/16,184.34 = 6,422.40/x
  3. Step 3: Cross multiply
    11,727.90x = 16,184.34 × 6,422.40
  4. Step 4: Simplify right side
    11,727.90x = 103,942,305.22
  5. Step 5: Solve for x
    x = 103,942,305.22/11,727.90
  6. Step 6: Final answer
    x = 8,862.82

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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.