Home / 11,639.90-16,079.26-11,207.83

Finding the Fourth Proportional to 11,639.90, 16,079.26 and 11,207.83

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Solution

The fourth proportional to 11,639.90, 16,079.26 and 11,207.83 is: 15,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.90 : 16,079.26 = 11,207.83 : x
  2. Step 2: Convert to fraction form
    11,639.90/16,079.26 = 11,207.83/x
  3. Step 3: Cross multiply
    11,639.90x = 16,079.26 × 11,207.83
  4. Step 4: Simplify right side
    11,639.90x = 180,213,556.57
  5. Step 5: Solve for x
    x = 180,213,556.57/11,639.90
  6. Step 6: Final answer
    x = 15,482.40

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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.