Home / 13,740.55-20,612.34-4,378.37

Finding the Fourth Proportional to 13,740.55, 20,612.34 and 4,378.37

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Solution

The fourth proportional to 13,740.55, 20,612.34 and 4,378.37 is: 6,568.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.55 : 20,612.34 = 4,378.37 : x
  2. Step 2: Convert to fraction form
    13,740.55/20,612.34 = 4,378.37/x
  3. Step 3: Cross multiply
    13,740.55x = 20,612.34 × 4,378.37
  4. Step 4: Simplify right side
    13,740.55x = 90,248,326.13
  5. Step 5: Solve for x
    x = 90,248,326.13/13,740.55
  6. Step 6: Final answer
    x = 6,568.03

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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.