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Finding the Fourth Proportional to 11,316.53, 15,615.53 and 6,279.44

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Solution

The fourth proportional to 11,316.53, 15,615.53 and 6,279.44 is: 8,664.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.53 : 15,615.53 = 6,279.44 : x
  2. Step 2: Convert to fraction form
    11,316.53/15,615.53 = 6,279.44/x
  3. Step 3: Cross multiply
    11,316.53x = 15,615.53 × 6,279.44
  4. Step 4: Simplify right side
    11,316.53x = 98,056,783.70
  5. Step 5: Solve for x
    x = 98,056,783.70/11,316.53
  6. Step 6: Final answer
    x = 8,664.92

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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.