Home / 19,131.07-28,698.26-5,280.07

Finding the Fourth Proportional to 19,131.07, 28,698.26 and 5,280.07

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Solution

The fourth proportional to 19,131.07, 28,698.26 and 5,280.07 is: 7,920.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.07 : 28,698.26 = 5,280.07 : x
  2. Step 2: Convert to fraction form
    19,131.07/28,698.26 = 5,280.07/x
  3. Step 3: Cross multiply
    19,131.07x = 28,698.26 × 5,280.07
  4. Step 4: Simplify right side
    19,131.07x = 151,528,821.68
  5. Step 5: Solve for x
    x = 151,528,821.68/19,131.07
  6. Step 6: Final answer
    x = 7,920.56

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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.