Home / 13,169.36-18,185.91-8,461.91

Finding the Fourth Proportional to 13,169.36, 18,185.91 and 8,461.91

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Solution

The fourth proportional to 13,169.36, 18,185.91 and 8,461.91 is: 11,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.36 : 18,185.91 = 8,461.91 : x
  2. Step 2: Convert to fraction form
    13,169.36/18,185.91 = 8,461.91/x
  3. Step 3: Cross multiply
    13,169.36x = 18,185.91 × 8,461.91
  4. Step 4: Simplify right side
    13,169.36x = 153,887,533.69
  5. Step 5: Solve for x
    x = 153,887,533.69/13,169.36
  6. Step 6: Final answer
    x = 11,685.27

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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.