Home / 15,631.68-21,571.72-8,558.54

Finding the Fourth Proportional to 15,631.68, 21,571.72 and 8,558.54

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Solution

The fourth proportional to 15,631.68, 21,571.72 and 8,558.54 is: 11,810.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.68 : 21,571.72 = 8,558.54 : x
  2. Step 2: Convert to fraction form
    15,631.68/21,571.72 = 8,558.54/x
  3. Step 3: Cross multiply
    15,631.68x = 21,571.72 × 8,558.54
  4. Step 4: Simplify right side
    15,631.68x = 184,622,428.49
  5. Step 5: Solve for x
    x = 184,622,428.49/15,631.68
  6. Step 6: Final answer
    x = 11,810.79

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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.