Home / 13,479.57-20,205.68-5,157.45

Finding the Fourth Proportional to 13,479.57, 20,205.68 and 5,157.45

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Solution

The fourth proportional to 13,479.57, 20,205.68 and 5,157.45 is: 7,730.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.57 : 20,205.68 = 5,157.45 : x
  2. Step 2: Convert to fraction form
    13,479.57/20,205.68 = 5,157.45/x
  3. Step 3: Cross multiply
    13,479.57x = 20,205.68 × 5,157.45
  4. Step 4: Simplify right side
    13,479.57x = 104,209,758.53
  5. Step 5: Solve for x
    x = 104,209,758.53/13,479.57
  6. Step 6: Final answer
    x = 7,730.94

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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.