Home / 18,412.20-27,618.30-8,570.70

Finding the Fourth Proportional to 18,412.20, 27,618.30 and 8,570.70

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Solution

The fourth proportional to 18,412.20, 27,618.30 and 8,570.70 is: 12,856.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.20 : 27,618.30 = 8,570.70 : x
  2. Step 2: Convert to fraction form
    18,412.20/27,618.30 = 8,570.70/x
  3. Step 3: Cross multiply
    18,412.20x = 27,618.30 × 8,570.70
  4. Step 4: Simplify right side
    18,412.20x = 236,708,163.81
  5. Step 5: Solve for x
    x = 236,708,163.81/18,412.20
  6. Step 6: Final answer
    x = 12,856.05

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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.