Home / 13,421.88-20,139-6,028.32

Finding the Fourth Proportional to 13,421.88, 20,139 and 6,028.32

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Solution

The fourth proportional to 13,421.88, 20,139 and 6,028.32 is: 9,045.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.88 : 20,139 = 6,028.32 : x
  2. Step 2: Convert to fraction form
    13,421.88/20,139 = 6,028.32/x
  3. Step 3: Cross multiply
    13,421.88x = 20,139 × 6,028.32
  4. Step 4: Simplify right side
    13,421.88x = 121,404,336.48
  5. Step 5: Solve for x
    x = 121,404,336.48/13,421.88
  6. Step 6: Final answer
    x = 9,045.26

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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.