Home / 20,470.51-30,705.90-8,783.83

Finding the Fourth Proportional to 20,470.51, 30,705.90 and 8,783.83

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Solution

The fourth proportional to 20,470.51, 30,705.90 and 8,783.83 is: 13,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.51 : 30,705.90 = 8,783.83 : x
  2. Step 2: Convert to fraction form
    20,470.51/30,705.90 = 8,783.83/x
  3. Step 3: Cross multiply
    20,470.51x = 30,705.90 × 8,783.83
  4. Step 4: Simplify right side
    20,470.51x = 269,715,405.60
  5. Step 5: Solve for x
    x = 269,715,405.60/20,470.51
  6. Step 6: Final answer
    x = 13,175.80

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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.