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Finding the Fourth Proportional to 11,375.40, 15,701.40 and 7,396.92

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Solution

The fourth proportional to 11,375.40, 15,701.40 and 7,396.92 is: 10,209.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,375.40 : 15,701.40 = 7,396.92 : x
  2. Step 2: Convert to fraction form
    11,375.40/15,701.40 = 7,396.92/x
  3. Step 3: Cross multiply
    11,375.40x = 15,701.40 × 7,396.92
  4. Step 4: Simplify right side
    11,375.40x = 116,141,999.69
  5. Step 5: Solve for x
    x = 116,141,999.69/11,375.40
  6. Step 6: Final answer
    x = 10,209.93

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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.