Home / 12,756.82-19,137.21-6,513.45

Finding the Fourth Proportional to 12,756.82, 19,137.21 and 6,513.45

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Solution

The fourth proportional to 12,756.82, 19,137.21 and 6,513.45 is: 9,771.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756.82 : 19,137.21 = 6,513.45 : x
  2. Step 2: Convert to fraction form
    12,756.82/19,137.21 = 6,513.45/x
  3. Step 3: Cross multiply
    12,756.82x = 19,137.21 × 6,513.45
  4. Step 4: Simplify right side
    12,756.82x = 124,649,260.47
  5. Step 5: Solve for x
    x = 124,649,260.47/12,756.82
  6. Step 6: Final answer
    x = 9,771.19

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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.