Home / 21,936.75-32,908.53-7,142.19

Finding the Fourth Proportional to 21,936.75, 32,908.53 and 7,142.19

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Solution

The fourth proportional to 21,936.75, 32,908.53 and 7,142.19 is: 10,714.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.75 : 32,908.53 = 7,142.19 : x
  2. Step 2: Convert to fraction form
    21,936.75/32,908.53 = 7,142.19/x
  3. Step 3: Cross multiply
    21,936.75x = 32,908.53 × 7,142.19
  4. Step 4: Simplify right side
    21,936.75x = 235,038,973.88
  5. Step 5: Solve for x
    x = 235,038,973.88/21,936.75
  6. Step 6: Final answer
    x = 10,714.39

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1.5x scale

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.