Home / 13,115.00-19,652.85-5,715.45

Finding the Fourth Proportional to 13,115.00, 19,652.85 and 5,715.45

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Solution

The fourth proportional to 13,115.00, 19,652.85 and 5,715.45 is: 8,564.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.00 : 19,652.85 = 5,715.45 : x
  2. Step 2: Convert to fraction form
    13,115.00/19,652.85 = 5,715.45/x
  3. Step 3: Cross multiply
    13,115.00x = 19,652.85 × 5,715.45
  4. Step 4: Simplify right side
    13,115.00x = 112,324,881.53
  5. Step 5: Solve for x
    x = 112,324,881.53/13,115.00
  6. Step 6: Final answer
    x = 8,564.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.