Home / 21,314.07-31,975.73-8,166.45

Finding the Fourth Proportional to 21,314.07, 31,975.73 and 8,166.45

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Solution

The fourth proportional to 21,314.07, 31,975.73 and 8,166.45 is: 12,251.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.07 : 31,975.73 = 8,166.45 : x
  2. Step 2: Convert to fraction form
    21,314.07/31,975.73 = 8,166.45/x
  3. Step 3: Cross multiply
    21,314.07x = 31,975.73 × 8,166.45
  4. Step 4: Simplify right side
    21,314.07x = 261,128,309.96
  5. Step 5: Solve for x
    x = 261,128,309.96/21,314.07
  6. Step 6: Final answer
    x = 12,251.45

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1.5x scale

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.