Home / 28,856.62-43,281.69-8,081.74

Finding the Fourth Proportional to 28,856.62, 43,281.69 and 8,081.74

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Solution

The fourth proportional to 28,856.62, 43,281.69 and 8,081.74 is: 12,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,856.62 : 43,281.69 = 8,081.74 : x
  2. Step 2: Convert to fraction form
    28,856.62/43,281.69 = 8,081.74/x
  3. Step 3: Cross multiply
    28,856.62x = 43,281.69 × 8,081.74
  4. Step 4: Simplify right side
    28,856.62x = 349,791,365.34
  5. Step 5: Solve for x
    x = 349,791,365.34/28,856.62
  6. Step 6: Final answer
    x = 12,121.70

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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.