Home / 28,747.08-43,091.40-21,807

Finding the Fourth Proportional to 28,747.08, 43,091.40 and 21,807

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Solution

The fourth proportional to 28,747.08, 43,091.40 and 21,807 is: 32,688.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,747.08 : 43,091.40 = 21,807 : x
  2. Step 2: Convert to fraction form
    28,747.08/43,091.40 = 21,807/x
  3. Step 3: Cross multiply
    28,747.08x = 43,091.40 × 21,807
  4. Step 4: Simplify right side
    28,747.08x = 939,694,159.80
  5. Step 5: Solve for x
    x = 939,694,159.80/28,747.08
  6. Step 6: Final answer
    x = 32,688.33

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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.