Home / 13,926.75-19,220.13-7,640.34

Finding the Fourth Proportional to 13,926.75, 19,220.13 and 7,640.34

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Solution

The fourth proportional to 13,926.75, 19,220.13 and 7,640.34 is: 10,544.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.75 : 19,220.13 = 7,640.34 : x
  2. Step 2: Convert to fraction form
    13,926.75/19,220.13 = 7,640.34/x
  3. Step 3: Cross multiply
    13,926.75x = 19,220.13 × 7,640.34
  4. Step 4: Simplify right side
    13,926.75x = 146,848,328.04
  5. Step 5: Solve for x
    x = 146,848,328.04/13,926.75
  6. Step 6: Final answer
    x = 10,544.34

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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.