Home / 19,161.20-28,763.40-11,374.40

Finding the Fourth Proportional to 19,161.20, 28,763.40 and 11,374.40

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Solution

The fourth proportional to 19,161.20, 28,763.40 and 11,374.40 is: 17,074.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,161.20 : 28,763.40 = 11,374.40 : x
  2. Step 2: Convert to fraction form
    19,161.20/28,763.40 = 11,374.40/x
  3. Step 3: Cross multiply
    19,161.20x = 28,763.40 × 11,374.40
  4. Step 4: Simplify right side
    19,161.20x = 327,166,416.96
  5. Step 5: Solve for x
    x = 327,166,416.96/19,161.20
  6. Step 6: Final answer
    x = 17,074.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.