Home / 20,683.72-28,543.76-11,252.31

Finding the Fourth Proportional to 20,683.72, 28,543.76 and 11,252.31

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Solution

The fourth proportional to 20,683.72, 28,543.76 and 11,252.31 is: 15,528.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.72 : 28,543.76 = 11,252.31 : x
  2. Step 2: Convert to fraction form
    20,683.72/28,543.76 = 11,252.31/x
  3. Step 3: Cross multiply
    20,683.72x = 28,543.76 × 11,252.31
  4. Step 4: Simplify right side
    20,683.72x = 321,183,236.09
  5. Step 5: Solve for x
    x = 321,183,236.09/20,683.72
  6. Step 6: Final answer
    x = 15,528.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.