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Finding the Fourth Proportional to 13,149.61, 18,145.17 and 7,483.93

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Solution

The fourth proportional to 13,149.61, 18,145.17 and 7,483.93 is: 10,327.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.61 : 18,145.17 = 7,483.93 : x
  2. Step 2: Convert to fraction form
    13,149.61/18,145.17 = 7,483.93/x
  3. Step 3: Cross multiply
    13,149.61x = 18,145.17 × 7,483.93
  4. Step 4: Simplify right side
    13,149.61x = 135,797,136.76
  5. Step 5: Solve for x
    x = 135,797,136.76/13,149.61
  6. Step 6: Final answer
    x = 10,327.09

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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.