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Finding the Fourth Proportional to 28,482.75, 42,722.84 and 8,760.45

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Solution

The fourth proportional to 28,482.75, 42,722.84 and 8,760.45 is: 13,140.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,482.75 : 42,722.84 = 8,760.45 : x
  2. Step 2: Convert to fraction form
    28,482.75/42,722.84 = 8,760.45/x
  3. Step 3: Cross multiply
    28,482.75x = 42,722.84 × 8,760.45
  4. Step 4: Simplify right side
    28,482.75x = 374,271,259.88
  5. Step 5: Solve for x
    x = 374,271,259.88/28,482.75
  6. Step 6: Final answer
    x = 13,140.28

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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.