Home / 13,328.64-19,998.72-7,176.96

Finding the Fourth Proportional to 13,328.64, 19,998.72 and 7,176.96

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Solution

The fourth proportional to 13,328.64, 19,998.72 and 7,176.96 is: 10,768.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.64 : 19,998.72 = 7,176.96 : x
  2. Step 2: Convert to fraction form
    13,328.64/19,998.72 = 7,176.96/x
  3. Step 3: Cross multiply
    13,328.64x = 19,998.72 × 7,176.96
  4. Step 4: Simplify right side
    13,328.64x = 143,530,013.49
  5. Step 5: Solve for x
    x = 143,530,013.49/13,328.64
  6. Step 6: Final answer
    x = 10,768.54

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1.5x scale

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.