Home / 38,986.40-58,450.80-16,781.60

Finding the Fourth Proportional to 38,986.40, 58,450.80 and 16,781.60

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Solution

The fourth proportional to 38,986.40, 58,450.80 and 16,781.60 is: 25,160.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,986.40 : 58,450.80 = 16,781.60 : x
  2. Step 2: Convert to fraction form
    38,986.40/58,450.80 = 16,781.60/x
  3. Step 3: Cross multiply
    38,986.40x = 58,450.80 × 16,781.60
  4. Step 4: Simplify right side
    38,986.40x = 980,897,945.28
  5. Step 5: Solve for x
    x = 980,897,945.28/38,986.40
  6. Step 6: Final answer
    x = 25,160.00

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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.