Home / 20,748.60-31,122.84-5,166.22

Finding the Fourth Proportional to 20,748.60, 31,122.84 and 5,166.22

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Solution

The fourth proportional to 20,748.60, 31,122.84 and 5,166.22 is: 7,749.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.60 : 31,122.84 = 5,166.22 : x
  2. Step 2: Convert to fraction form
    20,748.60/31,122.84 = 5,166.22/x
  3. Step 3: Cross multiply
    20,748.60x = 31,122.84 × 5,166.22
  4. Step 4: Simplify right side
    20,748.60x = 160,787,438.46
  5. Step 5: Solve for x
    x = 160,787,438.46/20,748.60
  6. Step 6: Final answer
    x = 7,749.32

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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.