Home / 15,697.38-21,661.58-8,622.45

Finding the Fourth Proportional to 15,697.38, 21,661.58 and 8,622.45

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Solution

The fourth proportional to 15,697.38, 21,661.58 and 8,622.45 is: 11,898.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,697.38 : 21,661.58 = 8,622.45 : x
  2. Step 2: Convert to fraction form
    15,697.38/21,661.58 = 8,622.45/x
  3. Step 3: Cross multiply
    15,697.38x = 21,661.58 × 8,622.45
  4. Step 4: Simplify right side
    15,697.38x = 186,775,847.36
  5. Step 5: Solve for x
    x = 186,775,847.36/15,697.38
  6. Step 6: Final answer
    x = 11,898.54

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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.