Home / 21,628.86-32,447.67-9,148.86

Finding the Fourth Proportional to 21,628.86, 32,447.67 and 9,148.86

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Solution

The fourth proportional to 21,628.86, 32,447.67 and 9,148.86 is: 13,725.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.86 : 32,447.67 = 9,148.86 : x
  2. Step 2: Convert to fraction form
    21,628.86/32,447.67 = 9,148.86/x
  3. Step 3: Cross multiply
    21,628.86x = 32,447.67 × 9,148.86
  4. Step 4: Simplify right side
    21,628.86x = 296,859,190.16
  5. Step 5: Solve for x
    x = 296,859,190.16/21,628.86
  6. Step 6: Final answer
    x = 13,725.14

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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.