Home / 19,030.20-28,542.78-8,639.56

Finding the Fourth Proportional to 19,030.20, 28,542.78 and 8,639.56

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Solution

The fourth proportional to 19,030.20, 28,542.78 and 8,639.56 is: 12,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,030.20 : 28,542.78 = 8,639.56 : x
  2. Step 2: Convert to fraction form
    19,030.20/28,542.78 = 8,639.56/x
  3. Step 3: Cross multiply
    19,030.20x = 28,542.78 × 8,639.56
  4. Step 4: Simplify right side
    19,030.20x = 246,597,060.38
  5. Step 5: Solve for x
    x = 246,597,060.38/19,030.20
  6. Step 6: Final answer
    x = 12,958.20

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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.