Home / 13,503.60-20,255.42-3,642.89

Finding the Fourth Proportional to 13,503.60, 20,255.42 and 3,642.89

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Solution

The fourth proportional to 13,503.60, 20,255.42 and 3,642.89 is: 5,464.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.60 : 20,255.42 = 3,642.89 : x
  2. Step 2: Convert to fraction form
    13,503.60/20,255.42 = 3,642.89/x
  3. Step 3: Cross multiply
    13,503.60x = 20,255.42 × 3,642.89
  4. Step 4: Simplify right side
    13,503.60x = 73,788,211.27
  5. Step 5: Solve for x
    x = 73,788,211.27/13,503.60
  6. Step 6: Final answer
    x = 5,464.34

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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.