Home / 28,205.04-42,315.87-8,486.61

Finding the Fourth Proportional to 28,205.04, 42,315.87 and 8,486.61

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Solution

The fourth proportional to 28,205.04, 42,315.87 and 8,486.61 is: 12,732.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205.04 : 42,315.87 = 8,486.61 : x
  2. Step 2: Convert to fraction form
    28,205.04/42,315.87 = 8,486.61/x
  3. Step 3: Cross multiply
    28,205.04x = 42,315.87 × 8,486.61
  4. Step 4: Simplify right side
    28,205.04x = 359,118,285.50
  5. Step 5: Solve for x
    x = 359,118,285.50/28,205.04
  6. Step 6: Final answer
    x = 12,732.42

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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.