Home / 13,764.16-20,642.08-3,902.72

Finding the Fourth Proportional to 13,764.16, 20,642.08 and 3,902.72

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Solution

The fourth proportional to 13,764.16, 20,642.08 and 3,902.72 is: 5,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764.16 : 20,642.08 = 3,902.72 : x
  2. Step 2: Convert to fraction form
    13,764.16/20,642.08 = 3,902.72/x
  3. Step 3: Cross multiply
    13,764.16x = 20,642.08 × 3,902.72
  4. Step 4: Simplify right side
    13,764.16x = 80,560,258.46
  5. Step 5: Solve for x
    x = 80,560,258.46/13,764.16
  6. Step 6: Final answer
    x = 5,852.90

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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.