Home / 20,967.48-31,431.24-7,816.32

Finding the Fourth Proportional to 20,967.48, 31,431.24 and 7,816.32

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Solution

The fourth proportional to 20,967.48, 31,431.24 and 7,816.32 is: 11,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.48 : 31,431.24 = 7,816.32 : x
  2. Step 2: Convert to fraction form
    20,967.48/31,431.24 = 7,816.32/x
  3. Step 3: Cross multiply
    20,967.48x = 31,431.24 × 7,816.32
  4. Step 4: Simplify right side
    20,967.48x = 245,676,629.84
  5. Step 5: Solve for x
    x = 245,676,629.84/20,967.48
  6. Step 6: Final answer
    x = 11,717.03

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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.