Home / 15,413.90-21,271.17-8,340.32

Finding the Fourth Proportional to 15,413.90, 21,271.17 and 8,340.32

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Solution

The fourth proportional to 15,413.90, 21,271.17 and 8,340.32 is: 11,509.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,413.90 : 21,271.17 = 8,340.32 : x
  2. Step 2: Convert to fraction form
    15,413.90/21,271.17 = 8,340.32/x
  3. Step 3: Cross multiply
    15,413.90x = 21,271.17 × 8,340.32
  4. Step 4: Simplify right side
    15,413.90x = 177,408,258.22
  5. Step 5: Solve for x
    x = 177,408,258.22/15,413.90
  6. Step 6: Final answer
    x = 11,509.63

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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.