Home / 12,122.14-16,730.40-6,818.80

Finding the Fourth Proportional to 12,122.14, 16,730.40 and 6,818.80

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Solution

The fourth proportional to 12,122.14, 16,730.40 and 6,818.80 is: 9,410.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.14 : 16,730.40 = 6,818.80 : x
  2. Step 2: Convert to fraction form
    12,122.14/16,730.40 = 6,818.80/x
  3. Step 3: Cross multiply
    12,122.14x = 16,730.40 × 6,818.80
  4. Step 4: Simplify right side
    12,122.14x = 114,081,251.52
  5. Step 5: Solve for x
    x = 114,081,251.52/12,122.14
  6. Step 6: Final answer
    x = 9,410.98

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Half scale
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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.