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Finding the Fourth Proportional to 18,994.77, 28,491.84 and 4,954.86

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Solution

The fourth proportional to 18,994.77, 28,491.84 and 4,954.86 is: 7,432.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.77 : 28,491.84 = 4,954.86 : x
  2. Step 2: Convert to fraction form
    18,994.77/28,491.84 = 4,954.86/x
  3. Step 3: Cross multiply
    18,994.77x = 28,491.84 × 4,954.86
  4. Step 4: Simplify right side
    18,994.77x = 141,173,078.34
  5. Step 5: Solve for x
    x = 141,173,078.34/18,994.77
  6. Step 6: Final answer
    x = 7,432.21

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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.