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Finding the Fourth Proportional to 20,609.81, 30,904.31 and 14,683.31

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Solution

The fourth proportional to 20,609.81, 30,904.31 and 14,683.31 is: 22,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.81 : 30,904.31 = 14,683.31 : x
  2. Step 2: Convert to fraction form
    20,609.81/30,904.31 = 14,683.31/x
  3. Step 3: Cross multiply
    20,609.81x = 30,904.31 × 14,683.31
  4. Step 4: Simplify right side
    20,609.81x = 453,777,409.54
  5. Step 5: Solve for x
    x = 453,777,409.54/20,609.81
  6. Step 6: Final answer
    x = 22,017.55

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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.