Home / 13,357.67-20,029.75-7,812.81

Finding the Fourth Proportional to 13,357.67, 20,029.75 and 7,812.81

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Solution

The fourth proportional to 13,357.67, 20,029.75 and 7,812.81 is: 11,715.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.67 : 20,029.75 = 7,812.81 : x
  2. Step 2: Convert to fraction form
    13,357.67/20,029.75 = 7,812.81/x
  3. Step 3: Cross multiply
    13,357.67x = 20,029.75 × 7,812.81
  4. Step 4: Simplify right side
    13,357.67x = 156,488,611.57
  5. Step 5: Solve for x
    x = 156,488,611.57/13,357.67
  6. Step 6: Final answer
    x = 11,715.27

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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.