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Finding the Fourth Proportional to 18,803.12, 28,201.48 and 8,808.93

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Solution

The fourth proportional to 18,803.12, 28,201.48 and 8,808.93 is: 13,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.12 : 28,201.48 = 8,808.93 : x
  2. Step 2: Convert to fraction form
    18,803.12/28,201.48 = 8,808.93/x
  3. Step 3: Cross multiply
    18,803.12x = 28,201.48 × 8,808.93
  4. Step 4: Simplify right side
    18,803.12x = 248,424,841.19
  5. Step 5: Solve for x
    x = 248,424,841.19/18,803.12
  6. Step 6: Final answer
    x = 13,211.90

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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.