Home / 19,378.79-26,739.52-11,419.94

Finding the Fourth Proportional to 19,378.79, 26,739.52 and 11,419.94

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Solution

The fourth proportional to 19,378.79, 26,739.52 and 11,419.94 is: 15,757.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,378.79 : 26,739.52 = 11,419.94 : x
  2. Step 2: Convert to fraction form
    19,378.79/26,739.52 = 11,419.94/x
  3. Step 3: Cross multiply
    19,378.79x = 26,739.52 × 11,419.94
  4. Step 4: Simplify right side
    19,378.79x = 305,363,601.92
  5. Step 5: Solve for x
    x = 305,363,601.92/19,378.79
  6. Step 6: Final answer
    x = 15,757.62

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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.