Home / 15,900.56-21,945.57-9,186.44

Finding the Fourth Proportional to 15,900.56, 21,945.57 and 9,186.44

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Solution

The fourth proportional to 15,900.56, 21,945.57 and 9,186.44 is: 12,678.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.56 : 21,945.57 = 9,186.44 : x
  2. Step 2: Convert to fraction form
    15,900.56/21,945.57 = 9,186.44/x
  3. Step 3: Cross multiply
    15,900.56x = 21,945.57 × 9,186.44
  4. Step 4: Simplify right side
    15,900.56x = 201,601,662.07
  5. Step 5: Solve for x
    x = 201,601,662.07/15,900.56
  6. Step 6: Final answer
    x = 12,678.90

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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.