Home / 12,861.92-19,275.44-5,457.11

Finding the Fourth Proportional to 12,861.92, 19,275.44 and 5,457.11

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Solution

The fourth proportional to 12,861.92, 19,275.44 and 5,457.11 is: 8,178.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.92 : 19,275.44 = 5,457.11 : x
  2. Step 2: Convert to fraction form
    12,861.92/19,275.44 = 5,457.11/x
  3. Step 3: Cross multiply
    12,861.92x = 19,275.44 × 5,457.11
  4. Step 4: Simplify right side
    12,861.92x = 105,188,072.72
  5. Step 5: Solve for x
    x = 105,188,072.72/12,861.92
  6. Step 6: Final answer
    x = 8,178.25

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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.