Home / 13,361.79-20,036.55-3,871.95

Finding the Fourth Proportional to 13,361.79, 20,036.55 and 3,871.95

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Solution

The fourth proportional to 13,361.79, 20,036.55 and 3,871.95 is: 5,806.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.79 : 20,036.55 = 3,871.95 : x
  2. Step 2: Convert to fraction form
    13,361.79/20,036.55 = 3,871.95/x
  3. Step 3: Cross multiply
    13,361.79x = 20,036.55 × 3,871.95
  4. Step 4: Simplify right side
    13,361.79x = 77,580,519.77
  5. Step 5: Solve for x
    x = 77,580,519.77/13,361.79
  6. Step 6: Final answer
    x = 5,806.15

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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.