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Finding the Fourth Proportional to 18,994.36, 28,466.72 and 13,747.04

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Solution

The fourth proportional to 18,994.36, 28,466.72 and 13,747.04 is: 20,602.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.36 : 28,466.72 = 13,747.04 : x
  2. Step 2: Convert to fraction form
    18,994.36/28,466.72 = 13,747.04/x
  3. Step 3: Cross multiply
    18,994.36x = 28,466.72 × 13,747.04
  4. Step 4: Simplify right side
    18,994.36x = 391,333,138.51
  5. Step 5: Solve for x
    x = 391,333,138.51/18,994.36
  6. Step 6: Final answer
    x = 20,602.60

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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.