Home / 12,348.30-18,522.45-6,818.70

Finding the Fourth Proportional to 12,348.30, 18,522.45 and 6,818.70

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Solution

The fourth proportional to 12,348.30, 18,522.45 and 6,818.70 is: 10,228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,348.30 : 18,522.45 = 6,818.70 : x
  2. Step 2: Convert to fraction form
    12,348.30/18,522.45 = 6,818.70/x
  3. Step 3: Cross multiply
    12,348.30x = 18,522.45 × 6,818.70
  4. Step 4: Simplify right side
    12,348.30x = 126,299,029.82
  5. Step 5: Solve for x
    x = 126,299,029.82/12,348.30
  6. Step 6: Final answer
    x = 10,228.05

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.