Home / 19,131.69-28,697.50-5,091.72

Finding the Fourth Proportional to 19,131.69, 28,697.50 and 5,091.72

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Solution

The fourth proportional to 19,131.69, 28,697.50 and 5,091.72 is: 7,637.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.69 : 28,697.50 = 5,091.72 : x
  2. Step 2: Convert to fraction form
    19,131.69/28,697.50 = 5,091.72/x
  3. Step 3: Cross multiply
    19,131.69x = 28,697.50 × 5,091.72
  4. Step 4: Simplify right side
    19,131.69x = 146,119,634.70
  5. Step 5: Solve for x
    x = 146,119,634.70/19,131.69
  6. Step 6: Final answer
    x = 7,637.57

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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.