Home / 11,638.90-16,077.88-11,206.83

Finding the Fourth Proportional to 11,638.90, 16,077.88 and 11,206.83

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Solution

The fourth proportional to 11,638.90, 16,077.88 and 11,206.83 is: 15,481.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,638.90 : 16,077.88 = 11,206.83 : x
  2. Step 2: Convert to fraction form
    11,638.90/16,077.88 = 11,206.83/x
  3. Step 3: Cross multiply
    11,638.90x = 16,077.88 × 11,206.83
  4. Step 4: Simplify right side
    11,638.90x = 180,182,011.89
  5. Step 5: Solve for x
    x = 180,182,011.89/11,638.90
  6. Step 6: Final answer
    x = 15,481.02

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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.