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Finding the Fourth Proportional to 15,896.01, 21,938.44 and 9,181.63

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Solution

The fourth proportional to 15,896.01, 21,938.44 and 9,181.63 is: 12,671.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,896.01 : 21,938.44 = 9,181.63 : x
  2. Step 2: Convert to fraction form
    15,896.01/21,938.44 = 9,181.63/x
  3. Step 3: Cross multiply
    15,896.01x = 21,938.44 × 9,181.63
  4. Step 4: Simplify right side
    15,896.01x = 201,430,638.86
  5. Step 5: Solve for x
    x = 201,430,638.86/15,896.01
  6. Step 6: Final answer
    x = 12,671.77

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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.