Home / 10,282.90-15,412.20-7,682.80

Finding the Fourth Proportional to 10,282.90, 15,412.20 and 7,682.80

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Solution

The fourth proportional to 10,282.90, 15,412.20 and 7,682.80 is: 11,515.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,282.90 : 15,412.20 = 7,682.80 : x
  2. Step 2: Convert to fraction form
    10,282.90/15,412.20 = 7,682.80/x
  3. Step 3: Cross multiply
    10,282.90x = 15,412.20 × 7,682.80
  4. Step 4: Simplify right side
    10,282.90x = 118,408,850.16
  5. Step 5: Solve for x
    x = 118,408,850.16/10,282.90
  6. Step 6: Final answer
    x = 11,515.12

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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.