Home / 20,838.24-31,260.60-6,984

Finding the Fourth Proportional to 20,838.24, 31,260.60 and 6,984

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Solution

The fourth proportional to 20,838.24, 31,260.60 and 6,984 is: 10,477.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.24 : 31,260.60 = 6,984 : x
  2. Step 2: Convert to fraction form
    20,838.24/31,260.60 = 6,984/x
  3. Step 3: Cross multiply
    20,838.24x = 31,260.60 × 6,984
  4. Step 4: Simplify right side
    20,838.24x = 218,324,030.40
  5. Step 5: Solve for x
    x = 218,324,030.40/20,838.24
  6. Step 6: Final answer
    x = 10,477.09

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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.