Home / 13,729.78-20,582.45-4,962.75

Finding the Fourth Proportional to 13,729.78, 20,582.45 and 4,962.75

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Solution

The fourth proportional to 13,729.78, 20,582.45 and 4,962.75 is: 7,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.78 : 20,582.45 = 4,962.75 : x
  2. Step 2: Convert to fraction form
    13,729.78/20,582.45 = 4,962.75/x
  3. Step 3: Cross multiply
    13,729.78x = 20,582.45 × 4,962.75
  4. Step 4: Simplify right side
    13,729.78x = 102,145,498.27
  5. Step 5: Solve for x
    x = 102,145,498.27/13,729.78
  6. Step 6: Final answer
    x = 7,439.70

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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.