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Finding the Fourth Proportional to 11,346, 15,657.56 and 6,378

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Solution

The fourth proportional to 11,346, 15,657.56 and 6,378 is: 8,801.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,346 : 15,657.56 = 6,378 : x
  2. Step 2: Convert to fraction form
    11,346/15,657.56 = 6,378/x
  3. Step 3: Cross multiply
    11,346x = 15,657.56 × 6,378
  4. Step 4: Simplify right side
    11,346x = 99,863,917.68
  5. Step 5: Solve for x
    x = 99,863,917.68/11,346
  6. Step 6: Final answer
    x = 8,801.68

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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.