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Finding the Fourth Proportional to 18,817.65, 28,225.03 and 6,965.86

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Solution

The fourth proportional to 18,817.65, 28,225.03 and 6,965.86 is: 10,448.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.65 : 28,225.03 = 6,965.86 : x
  2. Step 2: Convert to fraction form
    18,817.65/28,225.03 = 6,965.86/x
  3. Step 3: Cross multiply
    18,817.65x = 28,225.03 × 6,965.86
  4. Step 4: Simplify right side
    18,817.65x = 196,611,519.50
  5. Step 5: Solve for x
    x = 196,611,519.50/18,817.65
  6. Step 6: Final answer
    x = 10,448.25

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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.