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Finding the Fourth Proportional to 28,045.32, 42,076.76 and 8,323.98

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Solution

The fourth proportional to 28,045.32, 42,076.76 and 8,323.98 is: 12,488.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,045.32 : 42,076.76 = 8,323.98 : x
  2. Step 2: Convert to fraction form
    28,045.32/42,076.76 = 8,323.98/x
  3. Step 3: Cross multiply
    28,045.32x = 42,076.76 × 8,323.98
  4. Step 4: Simplify right side
    28,045.32x = 350,246,067.08
  5. Step 5: Solve for x
    x = 350,246,067.08/28,045.32
  6. Step 6: Final answer
    x = 12,488.57

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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.