Home / 21,163.52-31,746.56-8,847.36

Finding the Fourth Proportional to 21,163.52, 31,746.56 and 8,847.36

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Solution

The fourth proportional to 21,163.52, 31,746.56 and 8,847.36 is: 13,271.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.52 : 31,746.56 = 8,847.36 : x
  2. Step 2: Convert to fraction form
    21,163.52/31,746.56 = 8,847.36/x
  3. Step 3: Cross multiply
    21,163.52x = 31,746.56 × 8,847.36
  4. Step 4: Simplify right side
    21,163.52x = 280,873,245.08
  5. Step 5: Solve for x
    x = 280,873,245.08/21,163.52
  6. Step 6: Final answer
    x = 13,271.58

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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.