Home / 20,683.72-28,543.62-11,253.16

Finding the Fourth Proportional to 20,683.72, 28,543.62 and 11,253.16

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Solution

The fourth proportional to 20,683.72, 28,543.62 and 11,253.16 is: 15,529.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.72 : 28,543.62 = 11,253.16 : x
  2. Step 2: Convert to fraction form
    20,683.72/28,543.62 = 11,253.16/x
  3. Step 3: Cross multiply
    20,683.72x = 28,543.62 × 11,253.16
  4. Step 4: Simplify right side
    20,683.72x = 321,205,922.84
  5. Step 5: Solve for x
    x = 321,205,922.84/20,683.72
  6. Step 6: Final answer
    x = 15,529.41

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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.