Home / 13,719.75-18,934.07-7,751.27

Finding the Fourth Proportional to 13,719.75, 18,934.07 and 7,751.27

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Solution

The fourth proportional to 13,719.75, 18,934.07 and 7,751.27 is: 10,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.75 : 18,934.07 = 7,751.27 : x
  2. Step 2: Convert to fraction form
    13,719.75/18,934.07 = 7,751.27/x
  3. Step 3: Cross multiply
    13,719.75x = 18,934.07 × 7,751.27
  4. Step 4: Simplify right side
    13,719.75x = 146,762,955.34
  5. Step 5: Solve for x
    x = 146,762,955.34/13,719.75
  6. Step 6: Final answer
    x = 10,697.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.