Home / 19,130.87-28,698.48-5,091.47

Finding the Fourth Proportional to 19,130.87, 28,698.48 and 5,091.47

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Solution

The fourth proportional to 19,130.87, 28,698.48 and 5,091.47 is: 7,637.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,130.87 : 28,698.48 = 5,091.47 : x
  2. Step 2: Convert to fraction form
    19,130.87/28,698.48 = 5,091.47/x
  3. Step 3: Cross multiply
    19,130.87x = 28,698.48 × 5,091.47
  4. Step 4: Simplify right side
    19,130.87x = 146,117,449.97
  5. Step 5: Solve for x
    x = 146,117,449.97/19,130.87
  6. Step 6: Final answer
    x = 7,637.79

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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.