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Finding the Fourth Proportional to 11,374.90, 17,062.35 and 7,438.30

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Solution

The fourth proportional to 11,374.90, 17,062.35 and 7,438.30 is: 11,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,374.90 : 17,062.35 = 7,438.30 : x
  2. Step 2: Convert to fraction form
    11,374.90/17,062.35 = 7,438.30/x
  3. Step 3: Cross multiply
    11,374.90x = 17,062.35 × 7,438.30
  4. Step 4: Simplify right side
    11,374.90x = 126,914,878.01
  5. Step 5: Solve for x
    x = 126,914,878.01/11,374.90
  6. Step 6: Final answer
    x = 11,157.45

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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.