Home / 13,319.49-19,975.76-3,957.31

Finding the Fourth Proportional to 13,319.49, 19,975.76 and 3,957.31

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Solution

The fourth proportional to 13,319.49, 19,975.76 and 3,957.31 is: 5,934.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.49 : 19,975.76 = 3,957.31 : x
  2. Step 2: Convert to fraction form
    13,319.49/19,975.76 = 3,957.31/x
  3. Step 3: Cross multiply
    13,319.49x = 19,975.76 × 3,957.31
  4. Step 4: Simplify right side
    13,319.49x = 79,050,174.93
  5. Step 5: Solve for x
    x = 79,050,174.93/13,319.49
  6. Step 6: Final answer
    x = 5,934.93

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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.