Home / 21,223.44-31,837.08-8,740.56

Finding the Fourth Proportional to 21,223.44, 31,837.08 and 8,740.56

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Solution

The fourth proportional to 21,223.44, 31,837.08 and 8,740.56 is: 13,111.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.44 : 31,837.08 = 8,740.56 : x
  2. Step 2: Convert to fraction form
    21,223.44/31,837.08 = 8,740.56/x
  3. Step 3: Cross multiply
    21,223.44x = 31,837.08 × 8,740.56
  4. Step 4: Simplify right side
    21,223.44x = 278,273,907.96
  5. Step 5: Solve for x
    x = 278,273,907.96/21,223.44
  6. Step 6: Final answer
    x = 13,111.63

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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.