Home / 13,778.75-19,014.81-7,491.26

Finding the Fourth Proportional to 13,778.75, 19,014.81 and 7,491.26

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Solution

The fourth proportional to 13,778.75, 19,014.81 and 7,491.26 is: 10,338.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.75 : 19,014.81 = 7,491.26 : x
  2. Step 2: Convert to fraction form
    13,778.75/19,014.81 = 7,491.26/x
  3. Step 3: Cross multiply
    13,778.75x = 19,014.81 × 7,491.26
  4. Step 4: Simplify right side
    13,778.75x = 142,444,885.56
  5. Step 5: Solve for x
    x = 142,444,885.56/13,778.75
  6. Step 6: Final answer
    x = 10,338.01

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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.