Home / 12,395.08-17,079.78-11,520.04

Finding the Fourth Proportional to 12,395.08, 17,079.78 and 11,520.04

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Solution

The fourth proportional to 12,395.08, 17,079.78 and 11,520.04 is: 15,874.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,395.08 : 17,079.78 = 11,520.04 : x
  2. Step 2: Convert to fraction form
    12,395.08/17,079.78 = 11,520.04/x
  3. Step 3: Cross multiply
    12,395.08x = 17,079.78 × 11,520.04
  4. Step 4: Simplify right side
    12,395.08x = 196,759,748.79
  5. Step 5: Solve for x
    x = 196,759,748.79/12,395.08
  6. Step 6: Final answer
    x = 15,874.02

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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.