Home / 12,221.07-16,864.34-6,917.55

Finding the Fourth Proportional to 12,221.07, 16,864.34 and 6,917.55

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Solution

The fourth proportional to 12,221.07, 16,864.34 and 6,917.55 is: 9,545.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.07 : 16,864.34 = 6,917.55 : x
  2. Step 2: Convert to fraction form
    12,221.07/16,864.34 = 6,917.55/x
  3. Step 3: Cross multiply
    12,221.07x = 16,864.34 × 6,917.55
  4. Step 4: Simplify right side
    12,221.07x = 116,659,880.58
  5. Step 5: Solve for x
    x = 116,659,880.58/12,221.07
  6. Step 6: Final answer
    x = 9,545.80

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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.