Home / 13,839.95-20,756.08-3,842.40

Finding the Fourth Proportional to 13,839.95, 20,756.08 and 3,842.40

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Solution

The fourth proportional to 13,839.95, 20,756.08 and 3,842.40 is: 5,762.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.95 : 20,756.08 = 3,842.40 : x
  2. Step 2: Convert to fraction form
    13,839.95/20,756.08 = 3,842.40/x
  3. Step 3: Cross multiply
    13,839.95x = 20,756.08 × 3,842.40
  4. Step 4: Simplify right side
    13,839.95x = 79,753,161.79
  5. Step 5: Solve for x
    x = 79,753,161.79/13,839.95
  6. Step 6: Final answer
    x = 5,762.53

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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.