Home / 38,662.16-53,353.48-20,998.16

Finding the Fourth Proportional to 38,662.16, 53,353.48 and 20,998.16

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Solution

The fourth proportional to 38,662.16, 53,353.48 and 20,998.16 is: 28,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,662.16 : 53,353.48 = 20,998.16 : x
  2. Step 2: Convert to fraction form
    38,662.16/53,353.48 = 20,998.16/x
  3. Step 3: Cross multiply
    38,662.16x = 53,353.48 × 20,998.16
  4. Step 4: Simplify right side
    38,662.16x = 1,120,324,909.60
  5. Step 5: Solve for x
    x = 1,120,324,909.60/38,662.16
  6. Step 6: Final answer
    x = 28,977.30

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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.