Home / 13,815.90-20,732.40-7,246.80

Finding the Fourth Proportional to 13,815.90, 20,732.40 and 7,246.80

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Solution

The fourth proportional to 13,815.90, 20,732.40 and 7,246.80 is: 10,874.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.90 : 20,732.40 = 7,246.80 : x
  2. Step 2: Convert to fraction form
    13,815.90/20,732.40 = 7,246.80/x
  3. Step 3: Cross multiply
    13,815.90x = 20,732.40 × 7,246.80
  4. Step 4: Simplify right side
    13,815.90x = 150,243,556.32
  5. Step 5: Solve for x
    x = 150,243,556.32/13,815.90
  6. Step 6: Final answer
    x = 10,874.68

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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.