Home / 19,128.56-28,706.08-7,441.84

Finding the Fourth Proportional to 19,128.56, 28,706.08 and 7,441.84

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Solution

The fourth proportional to 19,128.56, 28,706.08 and 7,441.84 is: 11,167.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.56 : 28,706.08 = 7,441.84 : x
  2. Step 2: Convert to fraction form
    19,128.56/28,706.08 = 7,441.84/x
  3. Step 3: Cross multiply
    19,128.56x = 28,706.08 × 7,441.84
  4. Step 4: Simplify right side
    19,128.56x = 213,626,054.39
  5. Step 5: Solve for x
    x = 213,626,054.39/19,128.56
  6. Step 6: Final answer
    x = 11,167.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.