Home / 21,309.52-31,971.48-8,835.52

Finding the Fourth Proportional to 21,309.52, 31,971.48 and 8,835.52

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Solution

The fourth proportional to 21,309.52, 31,971.48 and 8,835.52 is: 13,256.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309.52 : 31,971.48 = 8,835.52 : x
  2. Step 2: Convert to fraction form
    21,309.52/31,971.48 = 8,835.52/x
  3. Step 3: Cross multiply
    21,309.52x = 31,971.48 × 8,835.52
  4. Step 4: Simplify right side
    21,309.52x = 282,484,650.97
  5. Step 5: Solve for x
    x = 282,484,650.97/21,309.52
  6. Step 6: Final answer
    x = 13,256.27

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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.