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Finding the Fourth Proportional to 34,676.58, 47,861.08 and 21,921.68

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Solution

The fourth proportional to 34,676.58, 47,861.08 and 21,921.68 is: 30,256.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,676.58 : 47,861.08 = 21,921.68 : x
  2. Step 2: Convert to fraction form
    34,676.58/47,861.08 = 21,921.68/x
  3. Step 3: Cross multiply
    34,676.58x = 47,861.08 × 21,921.68
  4. Step 4: Simplify right side
    34,676.58x = 1,049,195,280.21
  5. Step 5: Solve for x
    x = 1,049,195,280.21/34,676.58
  6. Step 6: Final answer
    x = 30,256.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.