Home / 28,007.76-42,011.52-8,286.44

Finding the Fourth Proportional to 28,007.76, 42,011.52 and 8,286.44

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Solution

The fourth proportional to 28,007.76, 42,011.52 and 8,286.44 is: 12,429.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.76 : 42,011.52 = 8,286.44 : x
  2. Step 2: Convert to fraction form
    28,007.76/42,011.52 = 8,286.44/x
  3. Step 3: Cross multiply
    28,007.76x = 42,011.52 × 8,286.44
  4. Step 4: Simplify right side
    28,007.76x = 348,125,939.79
  5. Step 5: Solve for x
    x = 348,125,939.79/28,007.76
  6. Step 6: Final answer
    x = 12,429.62

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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.