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Finding the Fourth Proportional to 12,216.10, 18,324.15 and 5,655.10

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Solution

The fourth proportional to 12,216.10, 18,324.15 and 5,655.10 is: 8,482.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.10 : 18,324.15 = 5,655.10 : x
  2. Step 2: Convert to fraction form
    12,216.10/18,324.15 = 5,655.10/x
  3. Step 3: Cross multiply
    12,216.10x = 18,324.15 × 5,655.10
  4. Step 4: Simplify right side
    12,216.10x = 103,624,900.67
  5. Step 5: Solve for x
    x = 103,624,900.67/12,216.10
  6. Step 6: Final answer
    x = 8,482.65

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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.