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Finding the Fourth Proportional to 10,089, 15,133.50 and 3,163.72

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Solution

The fourth proportional to 10,089, 15,133.50 and 3,163.72 is: 4,745.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,089 : 15,133.50 = 3,163.72 : x
  2. Step 2: Convert to fraction form
    10,089/15,133.50 = 3,163.72/x
  3. Step 3: Cross multiply
    10,089x = 15,133.50 × 3,163.72
  4. Step 4: Simplify right side
    10,089x = 47,878,156.62
  5. Step 5: Solve for x
    x = 47,878,156.62/10,089
  6. Step 6: Final answer
    x = 4,745.58

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.