Home / 28,186.44-42,286.80-8,465.16

Finding the Fourth Proportional to 28,186.44, 42,286.80 and 8,465.16

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Solution

The fourth proportional to 28,186.44, 42,286.80 and 8,465.16 is: 12,699.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.44 : 42,286.80 = 8,465.16 : x
  2. Step 2: Convert to fraction form
    28,186.44/42,286.80 = 8,465.16/x
  3. Step 3: Cross multiply
    28,186.44x = 42,286.80 × 8,465.16
  4. Step 4: Simplify right side
    28,186.44x = 357,964,527.89
  5. Step 5: Solve for x
    x = 357,964,527.89/28,186.44
  6. Step 6: Final answer
    x = 12,699.88

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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.