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Finding the Fourth Proportional to 18,803.61, 28,206.80 and 6,323.58

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Solution

The fourth proportional to 18,803.61, 28,206.80 and 6,323.58 is: 9,485.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.61 : 28,206.80 = 6,323.58 : x
  2. Step 2: Convert to fraction form
    18,803.61/28,206.80 = 6,323.58/x
  3. Step 3: Cross multiply
    18,803.61x = 28,206.80 × 6,323.58
  4. Step 4: Simplify right side
    18,803.61x = 178,367,948.44
  5. Step 5: Solve for x
    x = 178,367,948.44/18,803.61
  6. Step 6: Final answer
    x = 9,485.84

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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.