Home / 20,950.43-31,425.56-8,470.31

Finding the Fourth Proportional to 20,950.43, 31,425.56 and 8,470.31

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Solution

The fourth proportional to 20,950.43, 31,425.56 and 8,470.31 is: 12,705.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.43 : 31,425.56 = 8,470.31 : x
  2. Step 2: Convert to fraction form
    20,950.43/31,425.56 = 8,470.31/x
  3. Step 3: Cross multiply
    20,950.43x = 31,425.56 × 8,470.31
  4. Step 4: Simplify right side
    20,950.43x = 266,184,115.05
  5. Step 5: Solve for x
    x = 266,184,115.05/20,950.43
  6. Step 6: Final answer
    x = 12,705.42

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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.