Home / 38,385.84-57,583.94-13,420.02

Finding the Fourth Proportional to 38,385.84, 57,583.94 and 13,420.02

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Solution

The fourth proportional to 38,385.84, 57,583.94 and 13,420.02 is: 20,131.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,385.84 : 57,583.94 = 13,420.02 : x
  2. Step 2: Convert to fraction form
    38,385.84/57,583.94 = 13,420.02/x
  3. Step 3: Cross multiply
    38,385.84x = 57,583.94 × 13,420.02
  4. Step 4: Simplify right side
    38,385.84x = 772,777,626.48
  5. Step 5: Solve for x
    x = 772,777,626.48/38,385.84
  6. Step 6: Final answer
    x = 20,131.84

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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.