Home / 9,420.88-13,000.81-5,229.94

Finding the Fourth Proportional to 9,420.88, 13,000.81 and 5,229.94

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Solution

The fourth proportional to 9,420.88, 13,000.81 and 5,229.94 is: 7,217.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.88 : 13,000.81 = 5,229.94 : x
  2. Step 2: Convert to fraction form
    9,420.88/13,000.81 = 5,229.94/x
  3. Step 3: Cross multiply
    9,420.88x = 13,000.81 × 5,229.94
  4. Step 4: Simplify right side
    9,420.88x = 67,993,391.25
  5. Step 5: Solve for x
    x = 67,993,391.25/9,420.88
  6. Step 6: Final answer
    x = 7,217.31

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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.