Home / 13,991.83-19,308.75-7,704.21

Finding the Fourth Proportional to 13,991.83, 19,308.75 and 7,704.21

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Solution

The fourth proportional to 13,991.83, 19,308.75 and 7,704.21 is: 10,631.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.83 : 19,308.75 = 7,704.21 : x
  2. Step 2: Convert to fraction form
    13,991.83/19,308.75 = 7,704.21/x
  3. Step 3: Cross multiply
    13,991.83x = 19,308.75 × 7,704.21
  4. Step 4: Simplify right side
    13,991.83x = 148,758,529.77
  5. Step 5: Solve for x
    x = 148,758,529.77/13,991.83
  6. Step 6: Final answer
    x = 10,631.81

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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.