Home / 13,438.50-20,157.75-4,204.50

Finding the Fourth Proportional to 13,438.50, 20,157.75 and 4,204.50

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Solution

The fourth proportional to 13,438.50, 20,157.75 and 4,204.50 is: 6,306.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.50 : 20,157.75 = 4,204.50 : x
  2. Step 2: Convert to fraction form
    13,438.50/20,157.75 = 4,204.50/x
  3. Step 3: Cross multiply
    13,438.50x = 20,157.75 × 4,204.50
  4. Step 4: Simplify right side
    13,438.50x = 84,753,259.88
  5. Step 5: Solve for x
    x = 84,753,259.88/13,438.50
  6. Step 6: Final answer
    x = 6,306.75

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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.