Home / 12,896.61-17,798.40-7,231.27

Finding the Fourth Proportional to 12,896.61, 17,798.40 and 7,231.27

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Solution

The fourth proportional to 12,896.61, 17,798.40 and 7,231.27 is: 9,979.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,896.61 : 17,798.40 = 7,231.27 : x
  2. Step 2: Convert to fraction form
    12,896.61/17,798.40 = 7,231.27/x
  3. Step 3: Cross multiply
    12,896.61x = 17,798.40 × 7,231.27
  4. Step 4: Simplify right side
    12,896.61x = 128,704,991.47
  5. Step 5: Solve for x
    x = 128,704,991.47/12,896.61
  6. Step 6: Final answer
    x = 9,979.75

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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.