Home / 28,708.51-43,039.53-8,976.91

Finding the Fourth Proportional to 28,708.51, 43,039.53 and 8,976.91

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Solution

The fourth proportional to 28,708.51, 43,039.53 and 8,976.91 is: 13,458.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.51 : 43,039.53 = 8,976.91 : x
  2. Step 2: Convert to fraction form
    28,708.51/43,039.53 = 8,976.91/x
  3. Step 3: Cross multiply
    28,708.51x = 43,039.53 × 8,976.91
  4. Step 4: Simplify right side
    28,708.51x = 386,361,987.25
  5. Step 5: Solve for x
    x = 386,361,987.25/28,708.51
  6. Step 6: Final answer
    x = 13,458.10

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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.