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Finding the Fourth Proportional to 28,533.84, 42,784.80 and 8,806.80

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Solution

The fourth proportional to 28,533.84, 42,784.80 and 8,806.80 is: 13,205.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,533.84 : 42,784.80 = 8,806.80 : x
  2. Step 2: Convert to fraction form
    28,533.84/42,784.80 = 8,806.80/x
  3. Step 3: Cross multiply
    28,533.84x = 42,784.80 × 8,806.80
  4. Step 4: Simplify right side
    28,533.84x = 376,797,176.64
  5. Step 5: Solve for x
    x = 376,797,176.64/28,533.84
  6. Step 6: Final answer
    x = 13,205.27

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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.