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Finding the Fourth Proportional to 28,544.21, 42,822.63 and 8,552.90

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Solution

The fourth proportional to 28,544.21, 42,822.63 and 8,552.90 is: 12,831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,544.21 : 42,822.63 = 8,552.90 : x
  2. Step 2: Convert to fraction form
    28,544.21/42,822.63 = 8,552.90/x
  3. Step 3: Cross multiply
    28,544.21x = 42,822.63 × 8,552.90
  4. Step 4: Simplify right side
    28,544.21x = 366,257,458.01
  5. Step 5: Solve for x
    x = 366,257,458.01/28,544.21
  6. Step 6: Final answer
    x = 12,831.23

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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.