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Finding the Fourth Proportional to 21,638.94, 32,455.16 and 6,845.93

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Solution

The fourth proportional to 21,638.94, 32,455.16 and 6,845.93 is: 10,267.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,638.94 : 32,455.16 = 6,845.93 : x
  2. Step 2: Convert to fraction form
    21,638.94/32,455.16 = 6,845.93/x
  3. Step 3: Cross multiply
    21,638.94x = 32,455.16 × 6,845.93
  4. Step 4: Simplify right side
    21,638.94x = 222,185,886.93
  5. Step 5: Solve for x
    x = 222,185,886.93/21,638.94
  6. Step 6: Final answer
    x = 10,267.87

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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.