Home / 13,716.87-18,929.67-7,748.79

Finding the Fourth Proportional to 13,716.87, 18,929.67 and 7,748.79

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Solution

The fourth proportional to 13,716.87, 18,929.67 and 7,748.79 is: 10,693.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,716.87 : 18,929.67 = 7,748.79 : x
  2. Step 2: Convert to fraction form
    13,716.87/18,929.67 = 7,748.79/x
  3. Step 3: Cross multiply
    13,716.87x = 18,929.67 × 7,748.79
  4. Step 4: Simplify right side
    13,716.87x = 146,681,904.21
  5. Step 5: Solve for x
    x = 146,681,904.21/13,716.87
  6. Step 6: Final answer
    x = 10,693.54

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1.5x scale

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.