Home / 11,161.80-16,742.70-8,537.40

Finding the Fourth Proportional to 11,161.80, 16,742.70 and 8,537.40

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Solution

The fourth proportional to 11,161.80, 16,742.70 and 8,537.40 is: 12,806.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.80 : 16,742.70 = 8,537.40 : x
  2. Step 2: Convert to fraction form
    11,161.80/16,742.70 = 8,537.40/x
  3. Step 3: Cross multiply
    11,161.80x = 16,742.70 × 8,537.40
  4. Step 4: Simplify right side
    11,161.80x = 142,939,126.98
  5. Step 5: Solve for x
    x = 142,939,126.98/11,161.80
  6. Step 6: Final answer
    x = 12,806.10

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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.