Home / 13,384.12-18,470.57-8,077.91

Finding the Fourth Proportional to 13,384.12, 18,470.57 and 8,077.91

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Solution

The fourth proportional to 13,384.12, 18,470.57 and 8,077.91 is: 11,147.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.12 : 18,470.57 = 8,077.91 : x
  2. Step 2: Convert to fraction form
    13,384.12/18,470.57 = 8,077.91/x
  3. Step 3: Cross multiply
    13,384.12x = 18,470.57 × 8,077.91
  4. Step 4: Simplify right side
    13,384.12x = 149,203,576.13
  5. Step 5: Solve for x
    x = 149,203,576.13/13,384.12
  6. Step 6: Final answer
    x = 11,147.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.