Home / 20,500.83-28,292.37-13,683.16

Finding the Fourth Proportional to 20,500.83, 28,292.37 and 13,683.16

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Solution

The fourth proportional to 20,500.83, 28,292.37 and 13,683.16 is: 18,883.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.83 : 28,292.37 = 13,683.16 : x
  2. Step 2: Convert to fraction form
    20,500.83/28,292.37 = 13,683.16/x
  3. Step 3: Cross multiply
    20,500.83x = 28,292.37 × 13,683.16
  4. Step 4: Simplify right side
    20,500.83x = 387,128,884.03
  5. Step 5: Solve for x
    x = 387,128,884.03/20,500.83
  6. Step 6: Final answer
    x = 18,883.58

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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.