Home / 11,857.12-17,790.84-5,621.50

Finding the Fourth Proportional to 11,857.12, 17,790.84 and 5,621.50

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Solution

The fourth proportional to 11,857.12, 17,790.84 and 5,621.50 is: 8,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,857.12 : 17,790.84 = 5,621.50 : x
  2. Step 2: Convert to fraction form
    11,857.12/17,790.84 = 5,621.50/x
  3. Step 3: Cross multiply
    11,857.12x = 17,790.84 × 5,621.50
  4. Step 4: Simplify right side
    11,857.12x = 100,011,207.06
  5. Step 5: Solve for x
    x = 100,011,207.06/11,857.12
  6. Step 6: Final answer
    x = 8,434.70

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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.