Home / 20,628.18-30,935.79-8,929.62

Finding the Fourth Proportional to 20,628.18, 30,935.79 and 8,929.62

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Solution

The fourth proportional to 20,628.18, 30,935.79 and 8,929.62 is: 13,391.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.18 : 30,935.79 = 8,929.62 : x
  2. Step 2: Convert to fraction form
    20,628.18/30,935.79 = 8,929.62/x
  3. Step 3: Cross multiply
    20,628.18x = 30,935.79 × 8,929.62
  4. Step 4: Simplify right side
    20,628.18x = 276,244,849.10
  5. Step 5: Solve for x
    x = 276,244,849.10/20,628.18
  6. Step 6: Final answer
    x = 13,391.62

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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.