Home / 18,938.28-28,406.38-5,789.62

Finding the Fourth Proportional to 18,938.28, 28,406.38 and 5,789.62

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Solution

The fourth proportional to 18,938.28, 28,406.38 and 5,789.62 is: 8,684.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.28 : 28,406.38 = 5,789.62 : x
  2. Step 2: Convert to fraction form
    18,938.28/28,406.38 = 5,789.62/x
  3. Step 3: Cross multiply
    18,938.28x = 28,406.38 × 5,789.62
  4. Step 4: Simplify right side
    18,938.28x = 164,462,145.78
  5. Step 5: Solve for x
    x = 164,462,145.78/18,938.28
  6. Step 6: Final answer
    x = 8,684.11

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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.