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Finding the Fourth Proportional to 21,994.30, 33,007.65 and 8,856.10

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Solution

The fourth proportional to 21,994.30, 33,007.65 and 8,856.10 is: 13,290.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.30 : 33,007.65 = 8,856.10 : x
  2. Step 2: Convert to fraction form
    21,994.30/33,007.65 = 8,856.10/x
  3. Step 3: Cross multiply
    21,994.30x = 33,007.65 × 8,856.10
  4. Step 4: Simplify right side
    21,994.30x = 292,319,049.17
  5. Step 5: Solve for x
    x = 292,319,049.17/21,994.30
  6. Step 6: Final answer
    x = 13,290.67

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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.