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Finding the Fourth Proportional to 28,339.05, 42,510.09 and 8,616.09

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Solution

The fourth proportional to 28,339.05, 42,510.09 and 8,616.09 is: 12,924.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.05 : 42,510.09 = 8,616.09 : x
  2. Step 2: Convert to fraction form
    28,339.05/42,510.09 = 8,616.09/x
  3. Step 3: Cross multiply
    28,339.05x = 42,510.09 × 8,616.09
  4. Step 4: Simplify right side
    28,339.05x = 366,270,761.35
  5. Step 5: Solve for x
    x = 366,270,761.35/28,339.05
  6. Step 6: Final answer
    x = 12,924.60

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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.