Home / 11,511.37-15,885.34-6,475.87

Finding the Fourth Proportional to 11,511.37, 15,885.34 and 6,475.87

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Solution

The fourth proportional to 11,511.37, 15,885.34 and 6,475.87 is: 8,936.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,511.37 : 15,885.34 = 6,475.87 : x
  2. Step 2: Convert to fraction form
    11,511.37/15,885.34 = 6,475.87/x
  3. Step 3: Cross multiply
    11,511.37x = 15,885.34 × 6,475.87
  4. Step 4: Simplify right side
    11,511.37x = 102,871,396.75
  5. Step 5: Solve for x
    x = 102,871,396.75/11,511.37
  6. Step 6: Final answer
    x = 8,936.50

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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.