Home / 9,431.40-13,015.08-5,239.38

Finding the Fourth Proportional to 9,431.40, 13,015.08 and 5,239.38

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Solution

The fourth proportional to 9,431.40, 13,015.08 and 5,239.38 is: 7,230.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,431.40 : 13,015.08 = 5,239.38 : x
  2. Step 2: Convert to fraction form
    9,431.40/13,015.08 = 5,239.38/x
  3. Step 3: Cross multiply
    9,431.40x = 13,015.08 × 5,239.38
  4. Step 4: Simplify right side
    9,431.40x = 68,190,949.85
  5. Step 5: Solve for x
    x = 68,190,949.85/9,431.40
  6. Step 6: Final answer
    x = 7,230.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.