Home / 19,379.28-26,742.60-11,421.84

Finding the Fourth Proportional to 19,379.28, 26,742.60 and 11,421.84

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Solution

The fourth proportional to 19,379.28, 26,742.60 and 11,421.84 is: 15,761.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,379.28 : 26,742.60 = 11,421.84 : x
  2. Step 2: Convert to fraction form
    19,379.28/26,742.60 = 11,421.84/x
  3. Step 3: Cross multiply
    19,379.28x = 26,742.60 × 11,421.84
  4. Step 4: Simplify right side
    19,379.28x = 305,449,698.38
  5. Step 5: Solve for x
    x = 305,449,698.38/19,379.28
  6. Step 6: Final answer
    x = 15,761.66

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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.