Home / 19,378.28-26,741.22-11,420.84

Finding the Fourth Proportional to 19,378.28, 26,741.22 and 11,420.84

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Solution

The fourth proportional to 19,378.28, 26,741.22 and 11,420.84 is: 15,760.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,378.28 : 26,741.22 = 11,420.84 : x
  2. Step 2: Convert to fraction form
    19,378.28/26,741.22 = 11,420.84/x
  3. Step 3: Cross multiply
    19,378.28x = 26,741.22 × 11,420.84
  4. Step 4: Simplify right side
    19,378.28x = 305,407,195.02
  5. Step 5: Solve for x
    x = 305,407,195.02/19,378.28
  6. Step 6: Final answer
    x = 15,760.28

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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.