Home / 8,749.74-13,131.26-6,415.66

Finding the Fourth Proportional to 8,749.74, 13,131.26 and 6,415.66

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Solution

The fourth proportional to 8,749.74, 13,131.26 and 6,415.66 is: 9,628.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.74 : 13,131.26 = 6,415.66 : x
  2. Step 2: Convert to fraction form
    8,749.74/13,131.26 = 6,415.66/x
  3. Step 3: Cross multiply
    8,749.74x = 13,131.26 × 6,415.66
  4. Step 4: Simplify right side
    8,749.74x = 84,245,699.53
  5. Step 5: Solve for x
    x = 84,245,699.53/8,749.74
  6. Step 6: Final answer
    x = 9,628.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.