Home / 21,934.75-32,905.53-7,140.19

Finding the Fourth Proportional to 21,934.75, 32,905.53 and 7,140.19

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Solution

The fourth proportional to 21,934.75, 32,905.53 and 7,140.19 is: 10,711.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,934.75 : 32,905.53 = 7,140.19 : x
  2. Step 2: Convert to fraction form
    21,934.75/32,905.53 = 7,140.19/x
  3. Step 3: Cross multiply
    21,934.75x = 32,905.53 × 7,140.19
  4. Step 4: Simplify right side
    21,934.75x = 234,951,736.25
  5. Step 5: Solve for x
    x = 234,951,736.25/21,934.75
  6. Step 6: Final answer
    x = 10,711.39

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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.