Home / 9,420.24-12,999.96-5,228.52

Finding the Fourth Proportional to 9,420.24, 12,999.96 and 5,228.52

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Solution

The fourth proportional to 9,420.24, 12,999.96 and 5,228.52 is: 7,215.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.24 : 12,999.96 = 5,228.52 : x
  2. Step 2: Convert to fraction form
    9,420.24/12,999.96 = 5,228.52/x
  3. Step 3: Cross multiply
    9,420.24x = 12,999.96 × 5,228.52
  4. Step 4: Simplify right side
    9,420.24x = 67,970,550.86
  5. Step 5: Solve for x
    x = 67,970,550.86/9,420.24
  6. Step 6: Final answer
    x = 7,215.37

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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.