Home / 12,103.20-16,704.36-11,312.64

Finding the Fourth Proportional to 12,103.20, 16,704.36 and 11,312.64

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Solution

The fourth proportional to 12,103.20, 16,704.36 and 11,312.64 is: 15,613.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,103.20 : 16,704.36 = 11,312.64 : x
  2. Step 2: Convert to fraction form
    12,103.20/16,704.36 = 11,312.64/x
  3. Step 3: Cross multiply
    12,103.20x = 16,704.36 × 11,312.64
  4. Step 4: Simplify right side
    12,103.20x = 188,970,411.11
  5. Step 5: Solve for x
    x = 188,970,411.11/12,103.20
  6. Step 6: Final answer
    x = 15,613.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.