Home / 12,807.36-17,668.80-8,616.96

Finding the Fourth Proportional to 12,807.36, 17,668.80 and 8,616.96

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Solution

The fourth proportional to 12,807.36, 17,668.80 and 8,616.96 is: 11,887.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.36 : 17,668.80 = 8,616.96 : x
  2. Step 2: Convert to fraction form
    12,807.36/17,668.80 = 8,616.96/x
  3. Step 3: Cross multiply
    12,807.36x = 17,668.80 × 8,616.96
  4. Step 4: Simplify right side
    12,807.36x = 152,251,342.85
  5. Step 5: Solve for x
    x = 152,251,342.85/12,807.36
  6. Step 6: Final answer
    x = 11,887.80

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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.