Home / 13,928.26-19,221.40-7,641.04

Finding the Fourth Proportional to 13,928.26, 19,221.40 and 7,641.04

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Solution

The fourth proportional to 13,928.26, 19,221.40 and 7,641.04 is: 10,544.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.26 : 19,221.40 = 7,641.04 : x
  2. Step 2: Convert to fraction form
    13,928.26/19,221.40 = 7,641.04/x
  3. Step 3: Cross multiply
    13,928.26x = 19,221.40 × 7,641.04
  4. Step 4: Simplify right side
    13,928.26x = 146,871,486.26
  5. Step 5: Solve for x
    x = 146,871,486.26/13,928.26
  6. Step 6: Final answer
    x = 10,544.86

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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.