Home / 10,921.88-15,056.91-9,236.54

Finding the Fourth Proportional to 10,921.88, 15,056.91 and 9,236.54

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Solution

The fourth proportional to 10,921.88, 15,056.91 and 9,236.54 is: 12,733.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.88 : 15,056.91 = 9,236.54 : x
  2. Step 2: Convert to fraction form
    10,921.88/15,056.91 = 9,236.54/x
  3. Step 3: Cross multiply
    10,921.88x = 15,056.91 × 9,236.54
  4. Step 4: Simplify right side
    10,921.88x = 139,073,676.21
  5. Step 5: Solve for x
    x = 139,073,676.21/10,921.88
  6. Step 6: Final answer
    x = 12,733.50

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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.