Home / 13,425.84-20,146.68-5,112.86

Finding the Fourth Proportional to 13,425.84, 20,146.68 and 5,112.86

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Solution

The fourth proportional to 13,425.84, 20,146.68 and 5,112.86 is: 7,672.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.84 : 20,146.68 = 5,112.86 : x
  2. Step 2: Convert to fraction form
    13,425.84/20,146.68 = 5,112.86/x
  3. Step 3: Cross multiply
    13,425.84x = 20,146.68 × 5,112.86
  4. Step 4: Simplify right side
    13,425.84x = 103,007,154.30
  5. Step 5: Solve for x
    x = 103,007,154.30/13,425.84
  6. Step 6: Final answer
    x = 7,672.31

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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.