Home / 13,765.80-20,647.62-3,904.32

Finding the Fourth Proportional to 13,765.80, 20,647.62 and 3,904.32

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Solution

The fourth proportional to 13,765.80, 20,647.62 and 3,904.32 is: 5,856.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.80 : 20,647.62 = 3,904.32 : x
  2. Step 2: Convert to fraction form
    13,765.80/20,647.62 = 3,904.32/x
  3. Step 3: Cross multiply
    13,765.80x = 20,647.62 × 3,904.32
  4. Step 4: Simplify right side
    13,765.80x = 80,614,915.72
  5. Step 5: Solve for x
    x = 80,614,915.72/13,765.80
  6. Step 6: Final answer
    x = 5,856.17

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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.