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Finding the Fourth Proportional to 12,615.44, 17,409.08 and 7,310.75

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Solution

The fourth proportional to 12,615.44, 17,409.08 and 7,310.75 is: 10,088.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.44 : 17,409.08 = 7,310.75 : x
  2. Step 2: Convert to fraction form
    12,615.44/17,409.08 = 7,310.75/x
  3. Step 3: Cross multiply
    12,615.44x = 17,409.08 × 7,310.75
  4. Step 4: Simplify right side
    12,615.44x = 127,273,308.01
  5. Step 5: Solve for x
    x = 127,273,308.01/12,615.44
  6. Step 6: Final answer
    x = 10,088.70

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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.