Home / 28,791.42-43,106.47-21,749.28

Finding the Fourth Proportional to 28,791.42, 43,106.47 and 21,749.28

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Solution

The fourth proportional to 28,791.42, 43,106.47 and 21,749.28 is: 32,562.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.42 : 43,106.47 = 21,749.28 : x
  2. Step 2: Convert to fraction form
    28,791.42/43,106.47 = 21,749.28/x
  3. Step 3: Cross multiply
    28,791.42x = 43,106.47 × 21,749.28
  4. Step 4: Simplify right side
    28,791.42x = 937,534,631.47
  5. Step 5: Solve for x
    x = 937,534,631.47/28,791.42
  6. Step 6: Final answer
    x = 32,562.99

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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.