Home / 13,799.13-20,698.59-3,938.40

Finding the Fourth Proportional to 13,799.13, 20,698.59 and 3,938.40

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Solution

The fourth proportional to 13,799.13, 20,698.59 and 3,938.40 is: 5,907.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.13 : 20,698.59 = 3,938.40 : x
  2. Step 2: Convert to fraction form
    13,799.13/20,698.59 = 3,938.40/x
  3. Step 3: Cross multiply
    13,799.13x = 20,698.59 × 3,938.40
  4. Step 4: Simplify right side
    13,799.13x = 81,519,326.86
  5. Step 5: Solve for x
    x = 81,519,326.86/13,799.13
  6. Step 6: Final answer
    x = 5,907.57

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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.