Home / 15,772.05-21,765.29-8,698.32

Finding the Fourth Proportional to 15,772.05, 21,765.29 and 8,698.32

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Solution

The fourth proportional to 15,772.05, 21,765.29 and 8,698.32 is: 12,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.05 : 21,765.29 = 8,698.32 : x
  2. Step 2: Convert to fraction form
    15,772.05/21,765.29 = 8,698.32/x
  3. Step 3: Cross multiply
    15,772.05x = 21,765.29 × 8,698.32
  4. Step 4: Simplify right side
    15,772.05x = 189,321,413.82
  5. Step 5: Solve for x
    x = 189,321,413.82/15,772.05
  6. Step 6: Final answer
    x = 12,003.60

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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.