Home / 19,145.54-28,718.06-6,665.33

Finding the Fourth Proportional to 19,145.54, 28,718.06 and 6,665.33

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Solution

The fourth proportional to 19,145.54, 28,718.06 and 6,665.33 is: 9,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.54 : 28,718.06 = 6,665.33 : x
  2. Step 2: Convert to fraction form
    19,145.54/28,718.06 = 6,665.33/x
  3. Step 3: Cross multiply
    19,145.54x = 28,718.06 × 6,665.33
  4. Step 4: Simplify right side
    19,145.54x = 191,415,169.94
  5. Step 5: Solve for x
    x = 191,415,169.94/19,145.54
  6. Step 6: Final answer
    x = 9,997.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.