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Finding the Fourth Proportional to 11,153.52, 15,393.44 and 6,905.94

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Solution

The fourth proportional to 11,153.52, 15,393.44 and 6,905.94 is: 9,531.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.52 : 15,393.44 = 6,905.94 : x
  2. Step 2: Convert to fraction form
    11,153.52/15,393.44 = 6,905.94/x
  3. Step 3: Cross multiply
    11,153.52x = 15,393.44 × 6,905.94
  4. Step 4: Simplify right side
    11,153.52x = 106,306,173.03
  5. Step 5: Solve for x
    x = 106,306,173.03/11,153.52
  6. Step 6: Final answer
    x = 9,531.18

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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.