Home / 9,129.33-12,591.99-8,824.50

Finding the Fourth Proportional to 9,129.33, 12,591.99 and 8,824.50

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Solution

The fourth proportional to 9,129.33, 12,591.99 and 8,824.50 is: 12,171.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.33 : 12,591.99 = 8,824.50 : x
  2. Step 2: Convert to fraction form
    9,129.33/12,591.99 = 8,824.50/x
  3. Step 3: Cross multiply
    9,129.33x = 12,591.99 × 8,824.50
  4. Step 4: Simplify right side
    9,129.33x = 111,118,015.76
  5. Step 5: Solve for x
    x = 111,118,015.76/9,129.33
  6. Step 6: Final answer
    x = 12,171.54

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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.