Home / 28,881.82-43,319.40-7,820.61

Finding the Fourth Proportional to 28,881.82, 43,319.40 and 7,820.61

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Solution

The fourth proportional to 28,881.82, 43,319.40 and 7,820.61 is: 11,730.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,881.82 : 43,319.40 = 7,820.61 : x
  2. Step 2: Convert to fraction form
    28,881.82/43,319.40 = 7,820.61/x
  3. Step 3: Cross multiply
    28,881.82x = 43,319.40 × 7,820.61
  4. Step 4: Simplify right side
    28,881.82x = 338,784,132.83
  5. Step 5: Solve for x
    x = 338,784,132.83/28,881.82
  6. Step 6: Final answer
    x = 11,730.01

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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.