Home / 13,072.15-19,607.86-5,178.79

Finding the Fourth Proportional to 13,072.15, 19,607.86 and 5,178.79

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Solution

The fourth proportional to 13,072.15, 19,607.86 and 5,178.79 is: 7,768.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.15 : 19,607.86 = 5,178.79 : x
  2. Step 2: Convert to fraction form
    13,072.15/19,607.86 = 5,178.79/x
  3. Step 3: Cross multiply
    13,072.15x = 19,607.86 × 5,178.79
  4. Step 4: Simplify right side
    13,072.15x = 101,544,989.29
  5. Step 5: Solve for x
    x = 101,544,989.29/13,072.15
  6. Step 6: Final answer
    x = 7,768.04

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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.