Home / 12,707.39-19,021.13-8,735.42

Finding the Fourth Proportional to 12,707.39, 19,021.13 and 8,735.42

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Solution

The fourth proportional to 12,707.39, 19,021.13 and 8,735.42 is: 13,075.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,707.39 : 19,021.13 = 8,735.42 : x
  2. Step 2: Convert to fraction form
    12,707.39/19,021.13 = 8,735.42/x
  3. Step 3: Cross multiply
    12,707.39x = 19,021.13 × 8,735.42
  4. Step 4: Simplify right side
    12,707.39x = 166,157,628.82
  5. Step 5: Solve for x
    x = 166,157,628.82/12,707.39
  6. Step 6: Final answer
    x = 13,075.67

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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.