Home / 12,453.36-17,185.64-6,864.36

Finding the Fourth Proportional to 12,453.36, 17,185.64 and 6,864.36

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Solution

The fourth proportional to 12,453.36, 17,185.64 and 6,864.36 is: 9,472.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.36 : 17,185.64 = 6,864.36 : x
  2. Step 2: Convert to fraction form
    12,453.36/17,185.64 = 6,864.36/x
  3. Step 3: Cross multiply
    12,453.36x = 17,185.64 × 6,864.36
  4. Step 4: Simplify right side
    12,453.36x = 117,968,385.47
  5. Step 5: Solve for x
    x = 117,968,385.47/12,453.36
  6. Step 6: Final answer
    x = 9,472.82

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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.