Home / 28,413.56-39,210.26-15,838.32

Finding the Fourth Proportional to 28,413.56, 39,210.26 and 15,838.32

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Solution

The fourth proportional to 28,413.56, 39,210.26 and 15,838.32 is: 21,856.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.56 : 39,210.26 = 15,838.32 : x
  2. Step 2: Convert to fraction form
    28,413.56/39,210.26 = 15,838.32/x
  3. Step 3: Cross multiply
    28,413.56x = 39,210.26 × 15,838.32
  4. Step 4: Simplify right side
    28,413.56x = 621,024,645.16
  5. Step 5: Solve for x
    x = 621,024,645.16/28,413.56
  6. Step 6: Final answer
    x = 21,856.63

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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.