Home / 13,119.85-19,672.47-5,319.55

Finding the Fourth Proportional to 13,119.85, 19,672.47 and 5,319.55

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Solution

The fourth proportional to 13,119.85, 19,672.47 and 5,319.55 is: 7,976.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.85 : 19,672.47 = 5,319.55 : x
  2. Step 2: Convert to fraction form
    13,119.85/19,672.47 = 5,319.55/x
  3. Step 3: Cross multiply
    13,119.85x = 19,672.47 × 5,319.55
  4. Step 4: Simplify right side
    13,119.85x = 104,648,687.79
  5. Step 5: Solve for x
    x = 104,648,687.79/13,119.85
  6. Step 6: Final answer
    x = 7,976.36

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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.