Home / 13,860.01-20,790.17-3,999.38

Finding the Fourth Proportional to 13,860.01, 20,790.17 and 3,999.38

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Solution

The fourth proportional to 13,860.01, 20,790.17 and 3,999.38 is: 5,999.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.01 : 20,790.17 = 3,999.38 : x
  2. Step 2: Convert to fraction form
    13,860.01/20,790.17 = 3,999.38/x
  3. Step 3: Cross multiply
    13,860.01x = 20,790.17 × 3,999.38
  4. Step 4: Simplify right side
    13,860.01x = 83,147,681.14
  5. Step 5: Solve for x
    x = 83,147,681.14/13,860.01
  6. Step 6: Final answer
    x = 5,999.11

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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.