Home / 38,892.40-58,252.20-20,402.80

Finding the Fourth Proportional to 38,892.40, 58,252.20 and 20,402.80

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Solution

The fourth proportional to 38,892.40, 58,252.20 and 20,402.80 is: 30,558.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,892.40 : 58,252.20 = 20,402.80 : x
  2. Step 2: Convert to fraction form
    38,892.40/58,252.20 = 20,402.80/x
  3. Step 3: Cross multiply
    38,892.40x = 58,252.20 × 20,402.80
  4. Step 4: Simplify right side
    38,892.40x = 1,188,507,986.16
  5. Step 5: Solve for x
    x = 1,188,507,986.16/38,892.40
  6. Step 6: Final answer
    x = 30,558.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.