Home / 20,700.90-31,047.84-5,906.43

Finding the Fourth Proportional to 20,700.90, 31,047.84 and 5,906.43

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Solution

The fourth proportional to 20,700.90, 31,047.84 and 5,906.43 is: 8,858.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.90 : 31,047.84 = 5,906.43 : x
  2. Step 2: Convert to fraction form
    20,700.90/31,047.84 = 5,906.43/x
  3. Step 3: Cross multiply
    20,700.90x = 31,047.84 × 5,906.43
  4. Step 4: Simplify right side
    20,700.90x = 183,381,893.61
  5. Step 5: Solve for x
    x = 183,381,893.61/20,700.90
  6. Step 6: Final answer
    x = 8,858.64

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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.