Home / 19,145.27-28,717.81-6,665.20

Finding the Fourth Proportional to 19,145.27, 28,717.81 and 6,665.20

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Solution

The fourth proportional to 19,145.27, 28,717.81 and 6,665.20 is: 9,997.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.27 : 28,717.81 = 6,665.20 : x
  2. Step 2: Convert to fraction form
    19,145.27/28,717.81 = 6,665.20/x
  3. Step 3: Cross multiply
    19,145.27x = 28,717.81 × 6,665.20
  4. Step 4: Simplify right side
    19,145.27x = 191,409,858.75
  5. Step 5: Solve for x
    x = 191,409,858.75/19,145.27
  6. Step 6: Final answer
    x = 9,997.76

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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.