Home / 18,933.17-28,399.79-5,785.56

Finding the Fourth Proportional to 18,933.17, 28,399.79 and 5,785.56

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Solution

The fourth proportional to 18,933.17, 28,399.79 and 5,785.56 is: 8,678.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.17 : 28,399.79 = 5,785.56 : x
  2. Step 2: Convert to fraction form
    18,933.17/28,399.79 = 5,785.56/x
  3. Step 3: Cross multiply
    18,933.17x = 28,399.79 × 5,785.56
  4. Step 4: Simplify right side
    18,933.17x = 164,308,703.50
  5. Step 5: Solve for x
    x = 164,308,703.50/18,933.17
  6. Step 6: Final answer
    x = 8,678.35

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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.