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Finding the Fourth Proportional to 11,168.17, 15,412.80 and 6,452.80

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Solution

The fourth proportional to 11,168.17, 15,412.80 and 6,452.80 is: 8,905.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,168.17 : 15,412.80 = 6,452.80 : x
  2. Step 2: Convert to fraction form
    11,168.17/15,412.80 = 6,452.80/x
  3. Step 3: Cross multiply
    11,168.17x = 15,412.80 × 6,452.80
  4. Step 4: Simplify right side
    11,168.17x = 99,455,715.84
  5. Step 5: Solve for x
    x = 99,455,715.84/11,168.17
  6. Step 6: Final answer
    x = 8,905.28

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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.