Home / 28,787-43,161.95-12,142.58

Finding the Fourth Proportional to 28,787, 43,161.95 and 12,142.58

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Solution

The fourth proportional to 28,787, 43,161.95 and 12,142.58 is: 18,206.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787 : 43,161.95 = 12,142.58 : x
  2. Step 2: Convert to fraction form
    28,787/43,161.95 = 12,142.58/x
  3. Step 3: Cross multiply
    28,787x = 43,161.95 × 12,142.58
  4. Step 4: Simplify right side
    28,787x = 524,097,370.12
  5. Step 5: Solve for x
    x = 524,097,370.12/28,787
  6. Step 6: Final answer
    x = 18,206.04

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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.