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Finding the Fourth Proportional to 18,017.55, 26,990.04 and 8,984.43

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Solution

The fourth proportional to 18,017.55, 26,990.04 and 8,984.43 is: 13,458.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.55 : 26,990.04 = 8,984.43 : x
  2. Step 2: Convert to fraction form
    18,017.55/26,990.04 = 8,984.43/x
  3. Step 3: Cross multiply
    18,017.55x = 26,990.04 × 8,984.43
  4. Step 4: Simplify right side
    18,017.55x = 242,490,125.08
  5. Step 5: Solve for x
    x = 242,490,125.08/18,017.55
  6. Step 6: Final answer
    x = 13,458.55

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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.