Home / 20,103.16-27,683.88-18,819.54

Finding the Fourth Proportional to 20,103.16, 27,683.88 and 18,819.54

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Solution

The fourth proportional to 20,103.16, 27,683.88 and 18,819.54 is: 25,916.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.16 : 27,683.88 = 18,819.54 : x
  2. Step 2: Convert to fraction form
    20,103.16/27,683.88 = 18,819.54/x
  3. Step 3: Cross multiply
    20,103.16x = 27,683.88 × 18,819.54
  4. Step 4: Simplify right side
    20,103.16x = 520,997,887.02
  5. Step 5: Solve for x
    x = 520,997,887.02/20,103.16
  6. Step 6: Final answer
    x = 25,916.22

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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.