Home / 40,823.20-61,231.20-11,238.40

Finding the Fourth Proportional to 40,823.20, 61,231.20 and 11,238.40

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Solution

The fourth proportional to 40,823.20, 61,231.20 and 11,238.40 is: 16,856.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,823.20 : 61,231.20 = 11,238.40 : x
  2. Step 2: Convert to fraction form
    40,823.20/61,231.20 = 11,238.40/x
  3. Step 3: Cross multiply
    40,823.20x = 61,231.20 × 11,238.40
  4. Step 4: Simplify right side
    40,823.20x = 688,140,718.08
  5. Step 5: Solve for x
    x = 688,140,718.08/40,823.20
  6. Step 6: Final answer
    x = 16,856.61

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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.