Home / 13,740.60-20,604.08-4,379.40

Finding the Fourth Proportional to 13,740.60, 20,604.08 and 4,379.40

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Solution

The fourth proportional to 13,740.60, 20,604.08 and 4,379.40 is: 6,566.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.60 : 20,604.08 = 4,379.40 : x
  2. Step 2: Convert to fraction form
    13,740.60/20,604.08 = 4,379.40/x
  3. Step 3: Cross multiply
    13,740.60x = 20,604.08 × 4,379.40
  4. Step 4: Simplify right side
    13,740.60x = 90,233,486.06
  5. Step 5: Solve for x
    x = 90,233,486.06/13,740.60
  6. Step 6: Final answer
    x = 6,566.92

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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.