Home / 12,406.36-17,122.18-8,628.52

Finding the Fourth Proportional to 12,406.36, 17,122.18 and 8,628.52

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Solution

The fourth proportional to 12,406.36, 17,122.18 and 8,628.52 is: 11,908.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.36 : 17,122.18 = 8,628.52 : x
  2. Step 2: Convert to fraction form
    12,406.36/17,122.18 = 8,628.52/x
  3. Step 3: Cross multiply
    12,406.36x = 17,122.18 × 8,628.52
  4. Step 4: Simplify right side
    12,406.36x = 147,739,072.57
  5. Step 5: Solve for x
    x = 147,739,072.57/12,406.36
  6. Step 6: Final answer
    x = 11,908.33

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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.