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Finding the Fourth Proportional to 13,017.53, 17,962.26 and 7,910.39

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Solution

The fourth proportional to 13,017.53, 17,962.26 and 7,910.39 is: 10,915.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,017.53 : 17,962.26 = 7,910.39 : x
  2. Step 2: Convert to fraction form
    13,017.53/17,962.26 = 7,910.39/x
  3. Step 3: Cross multiply
    13,017.53x = 17,962.26 × 7,910.39
  4. Step 4: Simplify right side
    13,017.53x = 142,088,481.88
  5. Step 5: Solve for x
    x = 142,088,481.88/13,017.53
  6. Step 6: Final answer
    x = 10,915.16

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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.