Home / 45,145.35-67,728.96-13,555.35

Finding the Fourth Proportional to 45,145.35, 67,728.96 and 13,555.35

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Solution

The fourth proportional to 45,145.35, 67,728.96 and 13,555.35 is: 20,336.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,145.35 : 67,728.96 = 13,555.35 : x
  2. Step 2: Convert to fraction form
    45,145.35/67,728.96 = 13,555.35/x
  3. Step 3: Cross multiply
    45,145.35x = 67,728.96 × 13,555.35
  4. Step 4: Simplify right side
    45,145.35x = 918,089,757.94
  5. Step 5: Solve for x
    x = 918,089,757.94/45,145.35
  6. Step 6: Final answer
    x = 20,336.31

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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.