Home / 12,818.56-19,229.18-5,423.76

Finding the Fourth Proportional to 12,818.56, 19,229.18 and 5,423.76

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Solution

The fourth proportional to 12,818.56, 19,229.18 and 5,423.76 is: 8,136.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.56 : 19,229.18 = 5,423.76 : x
  2. Step 2: Convert to fraction form
    12,818.56/19,229.18 = 5,423.76/x
  3. Step 3: Cross multiply
    12,818.56x = 19,229.18 × 5,423.76
  4. Step 4: Simplify right side
    12,818.56x = 104,294,457.32
  5. Step 5: Solve for x
    x = 104,294,457.32/12,818.56
  6. Step 6: Final answer
    x = 8,136.21

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