Home / 12,275.35-16,939.16-7,239.33

Finding the Fourth Proportional to 12,275.35, 16,939.16 and 7,239.33

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Solution

The fourth proportional to 12,275.35, 16,939.16 and 7,239.33 is: 9,989.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.35 : 16,939.16 = 7,239.33 : x
  2. Step 2: Convert to fraction form
    12,275.35/16,939.16 = 7,239.33/x
  3. Step 3: Cross multiply
    12,275.35x = 16,939.16 × 7,239.33
  4. Step 4: Simplify right side
    12,275.35x = 122,628,160.11
  5. Step 5: Solve for x
    x = 122,628,160.11/12,275.35
  6. Step 6: Final answer
    x = 9,989.79

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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.