Home / 13,442.58-20,172.62-5,122.67

Finding the Fourth Proportional to 13,442.58, 20,172.62 and 5,122.67

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Solution

The fourth proportional to 13,442.58, 20,172.62 and 5,122.67 is: 7,687.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.58 : 20,172.62 = 5,122.67 : x
  2. Step 2: Convert to fraction form
    13,442.58/20,172.62 = 5,122.67/x
  3. Step 3: Cross multiply
    13,442.58x = 20,172.62 × 5,122.67
  4. Step 4: Simplify right side
    13,442.58x = 103,337,587.24
  5. Step 5: Solve for x
    x = 103,337,587.24/13,442.58
  6. Step 6: Final answer
    x = 7,687.33

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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.