Home / 12,483.98-17,227.92-6,818.78

Finding the Fourth Proportional to 12,483.98, 17,227.92 and 6,818.78

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Solution

The fourth proportional to 12,483.98, 17,227.92 and 6,818.78 is: 9,409.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.98 : 17,227.92 = 6,818.78 : x
  2. Step 2: Convert to fraction form
    12,483.98/17,227.92 = 6,818.78/x
  3. Step 3: Cross multiply
    12,483.98x = 17,227.92 × 6,818.78
  4. Step 4: Simplify right side
    12,483.98x = 117,473,396.34
  5. Step 5: Solve for x
    x = 117,473,396.34/12,483.98
  6. Step 6: Final answer
    x = 9,409.93

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.