Home / 21,098.90-31,650.16-5,516.50

Finding the Fourth Proportional to 21,098.90, 31,650.16 and 5,516.50

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Solution

The fourth proportional to 21,098.90, 31,650.16 and 5,516.50 is: 8,275.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.90 : 31,650.16 = 5,516.50 : x
  2. Step 2: Convert to fraction form
    21,098.90/31,650.16 = 5,516.50/x
  3. Step 3: Cross multiply
    21,098.90x = 31,650.16 × 5,516.50
  4. Step 4: Simplify right side
    21,098.90x = 174,598,107.64
  5. Step 5: Solve for x
    x = 174,598,107.64/21,098.90
  6. Step 6: Final answer
    x = 8,275.22

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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.