Home / 13,921.79-19,212.50-7,634.75

Finding the Fourth Proportional to 13,921.79, 19,212.50 and 7,634.75

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Solution

The fourth proportional to 13,921.79, 19,212.50 and 7,634.75 is: 10,536.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.79 : 19,212.50 = 7,634.75 : x
  2. Step 2: Convert to fraction form
    13,921.79/19,212.50 = 7,634.75/x
  3. Step 3: Cross multiply
    13,921.79x = 19,212.50 × 7,634.75
  4. Step 4: Simplify right side
    13,921.79x = 146,682,557.40
  5. Step 5: Solve for x
    x = 146,682,557.40/13,921.79
  6. Step 6: Final answer
    x = 10,536.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.