Home / 15,634.87-21,576.09-8,561.54

Finding the Fourth Proportional to 15,634.87, 21,576.09 and 8,561.54

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Solution

The fourth proportional to 15,634.87, 21,576.09 and 8,561.54 is: 11,814.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,634.87 : 21,576.09 = 8,561.54 : x
  2. Step 2: Convert to fraction form
    15,634.87/21,576.09 = 8,561.54/x
  3. Step 3: Cross multiply
    15,634.87x = 21,576.09 × 8,561.54
  4. Step 4: Simplify right side
    15,634.87x = 184,724,557.58
  5. Step 5: Solve for x
    x = 184,724,557.58/15,634.87
  6. Step 6: Final answer
    x = 11,814.91

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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.