Home / 13,778.50-20,654.61-4,412.47

Finding the Fourth Proportional to 13,778.50, 20,654.61 and 4,412.47

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Solution

The fourth proportional to 13,778.50, 20,654.61 and 4,412.47 is: 6,614.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.50 : 20,654.61 = 4,412.47 : x
  2. Step 2: Convert to fraction form
    13,778.50/20,654.61 = 4,412.47/x
  3. Step 3: Cross multiply
    13,778.50x = 20,654.61 × 4,412.47
  4. Step 4: Simplify right side
    13,778.50x = 91,137,846.99
  5. Step 5: Solve for x
    x = 91,137,846.99/13,778.50
  6. Step 6: Final answer
    x = 6,614.50

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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.