Home / 12,347.75-17,039.94-8,628.23

Finding the Fourth Proportional to 12,347.75, 17,039.94 and 8,628.23

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Solution

The fourth proportional to 12,347.75, 17,039.94 and 8,628.23 is: 11,906.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.75 : 17,039.94 = 8,628.23 : x
  2. Step 2: Convert to fraction form
    12,347.75/17,039.94 = 8,628.23/x
  3. Step 3: Cross multiply
    12,347.75x = 17,039.94 × 8,628.23
  4. Step 4: Simplify right side
    12,347.75x = 147,024,521.51
  5. Step 5: Solve for x
    x = 147,024,521.51/12,347.75
  6. Step 6: Final answer
    x = 11,906.99

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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.