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Finding the Fourth Proportional to 12,483.76, 17,227.80 and 6,818.80

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Solution

The fourth proportional to 12,483.76, 17,227.80 and 6,818.80 is: 9,410.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.76 : 17,227.80 = 6,818.80 : x
  2. Step 2: Convert to fraction form
    12,483.76/17,227.80 = 6,818.80/x
  3. Step 3: Cross multiply
    12,483.76x = 17,227.80 × 6,818.80
  4. Step 4: Simplify right side
    12,483.76x = 117,472,922.64
  5. Step 5: Solve for x
    x = 117,472,922.64/12,483.76
  6. Step 6: Final answer
    x = 9,410.06

Related Problems

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Half scale
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Double scale
Find fourth proportional to 12,484.76, 17,229.18 and 6,819.80
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.