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Finding the Fourth Proportional to 11,361.48, 15,678 and 6,325.58

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Solution

The fourth proportional to 11,361.48, 15,678 and 6,325.58 is: 8,728.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,361.48 : 15,678 = 6,325.58 : x
  2. Step 2: Convert to fraction form
    11,361.48/15,678 = 6,325.58/x
  3. Step 3: Cross multiply
    11,361.48x = 15,678 × 6,325.58
  4. Step 4: Simplify right side
    11,361.48x = 99,172,364.85
  5. Step 5: Solve for x
    x = 99,172,364.85/11,361.48
  6. Step 6: Final answer
    x = 8,728.82

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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.