Home / 13,126.63-19,678.32-5,119.55

Finding the Fourth Proportional to 13,126.63, 19,678.32 and 5,119.55

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Solution

The fourth proportional to 13,126.63, 19,678.32 and 5,119.55 is: 7,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.63 : 19,678.32 = 5,119.55 : x
  2. Step 2: Convert to fraction form
    13,126.63/19,678.32 = 5,119.55/x
  3. Step 3: Cross multiply
    13,126.63x = 19,678.32 × 5,119.55
  4. Step 4: Simplify right side
    13,126.63x = 100,744,214.85
  5. Step 5: Solve for x
    x = 100,744,214.85/13,126.63
  6. Step 6: Final answer
    x = 7,674.80

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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.