Home / 18,161.77-27,191.90-9,811.87

Finding the Fourth Proportional to 18,161.77, 27,191.90 and 9,811.87

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Solution

The fourth proportional to 18,161.77, 27,191.90 and 9,811.87 is: 14,690.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,161.77 : 27,191.90 = 9,811.87 : x
  2. Step 2: Convert to fraction form
    18,161.77/27,191.90 = 9,811.87/x
  3. Step 3: Cross multiply
    18,161.77x = 27,191.90 × 9,811.87
  4. Step 4: Simplify right side
    18,161.77x = 266,803,459.12
  5. Step 5: Solve for x
    x = 266,803,459.12/18,161.77
  6. Step 6: Final answer
    x = 14,690.39

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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.