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Finding the Fourth Proportional to 18,885.62, 28,328.44 and 8,994.92

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Solution

The fourth proportional to 18,885.62, 28,328.44 and 8,994.92 is: 13,492.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.62 : 28,328.44 = 8,994.92 : x
  2. Step 2: Convert to fraction form
    18,885.62/28,328.44 = 8,994.92/x
  3. Step 3: Cross multiply
    18,885.62x = 28,328.44 × 8,994.92
  4. Step 4: Simplify right side
    18,885.62x = 254,812,051.52
  5. Step 5: Solve for x
    x = 254,812,051.52/18,885.62
  6. Step 6: Final answer
    x = 13,492.38

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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.