Home / 11,859.85-17,790.08-5,618.40

Finding the Fourth Proportional to 11,859.85, 17,790.08 and 5,618.40

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Solution

The fourth proportional to 11,859.85, 17,790.08 and 5,618.40 is: 8,427.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,859.85 : 17,790.08 = 5,618.40 : x
  2. Step 2: Convert to fraction form
    11,859.85/17,790.08 = 5,618.40/x
  3. Step 3: Cross multiply
    11,859.85x = 17,790.08 × 5,618.40
  4. Step 4: Simplify right side
    11,859.85x = 99,951,785.47
  5. Step 5: Solve for x
    x = 99,951,785.47/11,859.85
  6. Step 6: Final answer
    x = 8,427.74

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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.