Home / 12,749.86-17,589.90-9,400.64

Finding the Fourth Proportional to 12,749.86, 17,589.90 and 9,400.64

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Solution

The fourth proportional to 12,749.86, 17,589.90 and 9,400.64 is: 12,969.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.86 : 17,589.90 = 9,400.64 : x
  2. Step 2: Convert to fraction form
    12,749.86/17,589.90 = 9,400.64/x
  3. Step 3: Cross multiply
    12,749.86x = 17,589.90 × 9,400.64
  4. Step 4: Simplify right side
    12,749.86x = 165,356,317.54
  5. Step 5: Solve for x
    x = 165,356,317.54/12,749.86
  6. Step 6: Final answer
    x = 12,969.27

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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.