Home / 20,650.77-28,512.53-18,242.34

Finding the Fourth Proportional to 20,650.77, 28,512.53 and 18,242.34

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Solution

The fourth proportional to 20,650.77, 28,512.53 and 18,242.34 is: 25,187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.77 : 28,512.53 = 18,242.34 : x
  2. Step 2: Convert to fraction form
    20,650.77/28,512.53 = 18,242.34/x
  3. Step 3: Cross multiply
    20,650.77x = 28,512.53 × 18,242.34
  4. Step 4: Simplify right side
    20,650.77x = 520,135,268.29
  5. Step 5: Solve for x
    x = 520,135,268.29/20,650.77
  6. Step 6: Final answer
    x = 25,187.21

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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.