Home / 28,413.55-39,211.38-15,667.59

Finding the Fourth Proportional to 28,413.55, 39,211.38 and 15,667.59

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Solution

The fourth proportional to 28,413.55, 39,211.38 and 15,667.59 is: 21,621.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.55 : 39,211.38 = 15,667.59 : x
  2. Step 2: Convert to fraction form
    28,413.55/39,211.38 = 15,667.59/x
  3. Step 3: Cross multiply
    28,413.55x = 39,211.38 × 15,667.59
  4. Step 4: Simplify right side
    28,413.55x = 614,347,825.17
  5. Step 5: Solve for x
    x = 614,347,825.17/28,413.55
  6. Step 6: Final answer
    x = 21,621.65

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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.