Home / 28,317.53-39,078.33-15,571.53

Finding the Fourth Proportional to 28,317.53, 39,078.33 and 15,571.53

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Solution

The fourth proportional to 28,317.53, 39,078.33 and 15,571.53 is: 21,488.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.53 : 39,078.33 = 15,571.53 : x
  2. Step 2: Convert to fraction form
    28,317.53/39,078.33 = 15,571.53/x
  3. Step 3: Cross multiply
    28,317.53x = 39,078.33 × 15,571.53
  4. Step 4: Simplify right side
    28,317.53x = 608,509,387.94
  5. Step 5: Solve for x
    x = 608,509,387.94/28,317.53
  6. Step 6: Final answer
    x = 21,488.79

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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.