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Finding the Fourth Proportional to 11,365.53, 17,039.79 and 7,657.35

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Solution

The fourth proportional to 11,365.53, 17,039.79 and 7,657.35 is: 11,480.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,365.53 : 17,039.79 = 7,657.35 : x
  2. Step 2: Convert to fraction form
    11,365.53/17,039.79 = 7,657.35/x
  3. Step 3: Cross multiply
    11,365.53x = 17,039.79 × 7,657.35
  4. Step 4: Simplify right side
    11,365.53x = 130,479,635.96
  5. Step 5: Solve for x
    x = 130,479,635.96/11,365.53
  6. Step 6: Final answer
    x = 11,480.29

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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.