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Finding the Fourth Proportional to 18,980.84, 28,488.76 and 9,627.42

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Solution

The fourth proportional to 18,980.84, 28,488.76 and 9,627.42 is: 14,450.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.84 : 28,488.76 = 9,627.42 : x
  2. Step 2: Convert to fraction form
    18,980.84/28,488.76 = 9,627.42/x
  3. Step 3: Cross multiply
    18,980.84x = 28,488.76 × 9,627.42
  4. Step 4: Simplify right side
    18,980.84x = 274,273,257.80
  5. Step 5: Solve for x
    x = 274,273,257.80/18,980.84
  6. Step 6: Final answer
    x = 14,450.01

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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.