Home / 9,420.99-12,999.45-5,441.37

Finding the Fourth Proportional to 9,420.99, 12,999.45 and 5,441.37

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Solution

The fourth proportional to 9,420.99, 12,999.45 and 5,441.37 is: 7,508.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.99 : 12,999.45 = 5,441.37 : x
  2. Step 2: Convert to fraction form
    9,420.99/12,999.45 = 5,441.37/x
  3. Step 3: Cross multiply
    9,420.99x = 12,999.45 × 5,441.37
  4. Step 4: Simplify right side
    9,420.99x = 70,734,817.25
  5. Step 5: Solve for x
    x = 70,734,817.25/9,420.99
  6. Step 6: Final answer
    x = 7,508.21

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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.