Home / 20,943.14-31,416.24-7,795.50

Finding the Fourth Proportional to 20,943.14, 31,416.24 and 7,795.50

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Solution

The fourth proportional to 20,943.14, 31,416.24 and 7,795.50 is: 11,693.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.14 : 31,416.24 = 7,795.50 : x
  2. Step 2: Convert to fraction form
    20,943.14/31,416.24 = 7,795.50/x
  3. Step 3: Cross multiply
    20,943.14x = 31,416.24 × 7,795.50
  4. Step 4: Simplify right side
    20,943.14x = 244,905,298.92
  5. Step 5: Solve for x
    x = 244,905,298.92/20,943.14
  6. Step 6: Final answer
    x = 11,693.82

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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.