Home / 27,141.27-40,709.96-8,420.83

Finding the Fourth Proportional to 27,141.27, 40,709.96 and 8,420.83

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Solution

The fourth proportional to 27,141.27, 40,709.96 and 8,420.83 is: 12,630.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,141.27 : 40,709.96 = 8,420.83 : x
  2. Step 2: Convert to fraction form
    27,141.27/40,709.96 = 8,420.83/x
  3. Step 3: Cross multiply
    27,141.27x = 40,709.96 × 8,420.83
  4. Step 4: Simplify right side
    27,141.27x = 342,811,652.47
  5. Step 5: Solve for x
    x = 342,811,652.47/27,141.27
  6. Step 6: Final answer
    x = 12,630.64

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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.