Home / 13,479.32-20,205.30-5,157.20

Finding the Fourth Proportional to 13,479.32, 20,205.30 and 5,157.20

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Solution

The fourth proportional to 13,479.32, 20,205.30 and 5,157.20 is: 7,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.32 : 20,205.30 = 5,157.20 : x
  2. Step 2: Convert to fraction form
    13,479.32/20,205.30 = 5,157.20/x
  3. Step 3: Cross multiply
    13,479.32x = 20,205.30 × 5,157.20
  4. Step 4: Simplify right side
    13,479.32x = 104,202,773.16
  5. Step 5: Solve for x
    x = 104,202,773.16/13,479.32
  6. Step 6: Final answer
    x = 7,730.57

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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.