Home / 28,917.80-43,376.70-21,044.60

Finding the Fourth Proportional to 28,917.80, 43,376.70 and 21,044.60

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Solution

The fourth proportional to 28,917.80, 43,376.70 and 21,044.60 is: 31,566.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.80 : 43,376.70 = 21,044.60 : x
  2. Step 2: Convert to fraction form
    28,917.80/43,376.70 = 21,044.60/x
  3. Step 3: Cross multiply
    28,917.80x = 43,376.70 × 21,044.60
  4. Step 4: Simplify right side
    28,917.80x = 912,845,300.82
  5. Step 5: Solve for x
    x = 912,845,300.82/28,917.80
  6. Step 6: Final answer
    x = 31,566.90

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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.