Home / 12,856.32-19,261.60-8,953.12

Finding the Fourth Proportional to 12,856.32, 19,261.60 and 8,953.12

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Solution

The fourth proportional to 12,856.32, 19,261.60 and 8,953.12 is: 13,413.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,856.32 : 19,261.60 = 8,953.12 : x
  2. Step 2: Convert to fraction form
    12,856.32/19,261.60 = 8,953.12/x
  3. Step 3: Cross multiply
    12,856.32x = 19,261.60 × 8,953.12
  4. Step 4: Simplify right side
    12,856.32x = 172,451,416.19
  5. Step 5: Solve for x
    x = 172,451,416.19/12,856.32
  6. Step 6: Final answer
    x = 13,413.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.