Home / 13,240.77-19,861.13-8,313.87

Finding the Fourth Proportional to 13,240.77, 19,861.13 and 8,313.87

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Solution

The fourth proportional to 13,240.77, 19,861.13 and 8,313.87 is: 12,470.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.77 : 19,861.13 = 8,313.87 : x
  2. Step 2: Convert to fraction form
    13,240.77/19,861.13 = 8,313.87/x
  3. Step 3: Cross multiply
    13,240.77x = 19,861.13 × 8,313.87
  4. Step 4: Simplify right side
    13,240.77x = 165,122,948.14
  5. Step 5: Solve for x
    x = 165,122,948.14/13,240.77
  6. Step 6: Final answer
    x = 12,470.79

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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.