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Finding the Fourth Proportional to 12,388.68, 18,568.98 and 6,153.03

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Solution

The fourth proportional to 12,388.68, 18,568.98 and 6,153.03 is: 9,222.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.68 : 18,568.98 = 6,153.03 : x
  2. Step 2: Convert to fraction form
    12,388.68/18,568.98 = 6,153.03/x
  3. Step 3: Cross multiply
    12,388.68x = 18,568.98 × 6,153.03
  4. Step 4: Simplify right side
    12,388.68x = 114,255,491.01
  5. Step 5: Solve for x
    x = 114,255,491.01/12,388.68
  6. Step 6: Final answer
    x = 9,222.57

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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.