Home / 13,545.74-20,318.60-6,615.38

Finding the Fourth Proportional to 13,545.74, 20,318.60 and 6,615.38

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Solution

The fourth proportional to 13,545.74, 20,318.60 and 6,615.38 is: 9,923.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.74 : 20,318.60 = 6,615.38 : x
  2. Step 2: Convert to fraction form
    13,545.74/20,318.60 = 6,615.38/x
  3. Step 3: Cross multiply
    13,545.74x = 20,318.60 × 6,615.38
  4. Step 4: Simplify right side
    13,545.74x = 134,415,175.01
  5. Step 5: Solve for x
    x = 134,415,175.01/13,545.74
  6. Step 6: Final answer
    x = 9,923.06

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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.