Home / 13,419.37-20,129.25-4,654.56

Finding the Fourth Proportional to 13,419.37, 20,129.25 and 4,654.56

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Solution

The fourth proportional to 13,419.37, 20,129.25 and 4,654.56 is: 6,981.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.37 : 20,129.25 = 4,654.56 : x
  2. Step 2: Convert to fraction form
    13,419.37/20,129.25 = 4,654.56/x
  3. Step 3: Cross multiply
    13,419.37x = 20,129.25 × 4,654.56
  4. Step 4: Simplify right side
    13,419.37x = 93,692,801.88
  5. Step 5: Solve for x
    x = 93,692,801.88/13,419.37
  6. Step 6: Final answer
    x = 6,981.91

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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.