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Finding the Fourth Proportional to 13,461.68, 18,576.71 and 7,493.20

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Solution

The fourth proportional to 13,461.68, 18,576.71 and 7,493.20 is: 10,340.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,461.68 : 18,576.71 = 7,493.20 : x
  2. Step 2: Convert to fraction form
    13,461.68/18,576.71 = 7,493.20/x
  3. Step 3: Cross multiply
    13,461.68x = 18,576.71 × 7,493.20
  4. Step 4: Simplify right side
    13,461.68x = 139,198,947.56
  5. Step 5: Solve for x
    x = 139,198,947.56/13,461.68
  6. Step 6: Final answer
    x = 10,340.38

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Half scale
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Double scale
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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.