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Finding the Fourth Proportional to 13,576.44, 18,731.28 and 7,607.28

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Solution

The fourth proportional to 13,576.44, 18,731.28 and 7,607.28 is: 10,495.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576.44 : 18,731.28 = 7,607.28 : x
  2. Step 2: Convert to fraction form
    13,576.44/18,731.28 = 7,607.28/x
  3. Step 3: Cross multiply
    13,576.44x = 18,731.28 × 7,607.28
  4. Step 4: Simplify right side
    13,576.44x = 142,494,091.72
  5. Step 5: Solve for x
    x = 142,494,091.72/13,576.44
  6. Step 6: Final answer
    x = 10,495.69

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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.