Home / 13,603.88-20,403.08-4,242.38

Finding the Fourth Proportional to 13,603.88, 20,403.08 and 4,242.38

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Solution

The fourth proportional to 13,603.88, 20,403.08 and 4,242.38 is: 6,362.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.88 : 20,403.08 = 4,242.38 : x
  2. Step 2: Convert to fraction form
    13,603.88/20,403.08 = 4,242.38/x
  3. Step 3: Cross multiply
    13,603.88x = 20,403.08 × 4,242.38
  4. Step 4: Simplify right side
    13,603.88x = 86,557,495.30
  5. Step 5: Solve for x
    x = 86,557,495.30/13,603.88
  6. Step 6: Final answer
    x = 6,362.71

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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.