Home / 13,121.81-19,670.89-4,795.98

Finding the Fourth Proportional to 13,121.81, 19,670.89 and 4,795.98

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Solution

The fourth proportional to 13,121.81, 19,670.89 and 4,795.98 is: 7,189.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.81 : 19,670.89 = 4,795.98 : x
  2. Step 2: Convert to fraction form
    13,121.81/19,670.89 = 4,795.98/x
  3. Step 3: Cross multiply
    13,121.81x = 19,670.89 × 4,795.98
  4. Step 4: Simplify right side
    13,121.81x = 94,341,277.49
  5. Step 5: Solve for x
    x = 94,341,277.49/13,121.81
  6. Step 6: Final answer
    x = 7,189.65

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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.