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Finding the Fourth Proportional to 11,130.60, 15,361.98 and 6,657.84

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Solution

The fourth proportional to 11,130.60, 15,361.98 and 6,657.84 is: 9,188.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,130.60 : 15,361.98 = 6,657.84 : x
  2. Step 2: Convert to fraction form
    11,130.60/15,361.98 = 6,657.84/x
  3. Step 3: Cross multiply
    11,130.60x = 15,361.98 × 6,657.84
  4. Step 4: Simplify right side
    11,130.60x = 102,277,604.92
  5. Step 5: Solve for x
    x = 102,277,604.92/11,130.60
  6. Step 6: Final answer
    x = 9,188.87

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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.