Home / 13,921.39-19,211.49-7,633.75

Finding the Fourth Proportional to 13,921.39, 19,211.49 and 7,633.75

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Solution

The fourth proportional to 13,921.39, 19,211.49 and 7,633.75 is: 10,534.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.39 : 19,211.49 = 7,633.75 : x
  2. Step 2: Convert to fraction form
    13,921.39/19,211.49 = 7,633.75/x
  3. Step 3: Cross multiply
    13,921.39x = 19,211.49 × 7,633.75
  4. Step 4: Simplify right side
    13,921.39x = 146,655,711.79
  5. Step 5: Solve for x
    x = 146,655,711.79/13,921.39
  6. Step 6: Final answer
    x = 10,534.56

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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.