Home / 21,286.63-31,929.95-8,792.93

Finding the Fourth Proportional to 21,286.63, 31,929.95 and 8,792.93

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Solution

The fourth proportional to 21,286.63, 31,929.95 and 8,792.93 is: 13,189.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.63 : 31,929.95 = 8,792.93 : x
  2. Step 2: Convert to fraction form
    21,286.63/31,929.95 = 8,792.93/x
  3. Step 3: Cross multiply
    21,286.63x = 31,929.95 × 8,792.93
  4. Step 4: Simplify right side
    21,286.63x = 280,757,777.80
  5. Step 5: Solve for x
    x = 280,757,777.80/21,286.63
  6. Step 6: Final answer
    x = 13,189.39

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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.