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Finding the Fourth Proportional to 19,994.21, 29,972.63 and 8,894.88

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Solution

The fourth proportional to 19,994.21, 29,972.63 and 8,894.88 is: 13,334.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,994.21 : 29,972.63 = 8,894.88 : x
  2. Step 2: Convert to fraction form
    19,994.21/29,972.63 = 8,894.88/x
  3. Step 3: Cross multiply
    19,994.21x = 29,972.63 × 8,894.88
  4. Step 4: Simplify right side
    19,994.21x = 266,602,969.37
  5. Step 5: Solve for x
    x = 266,602,969.37/19,994.21
  6. Step 6: Final answer
    x = 13,334.01

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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.