Home / 10,526.43-15,786.90-3,128.90

Finding the Fourth Proportional to 10,526.43, 15,786.90 and 3,128.90

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Solution

The fourth proportional to 10,526.43, 15,786.90 and 3,128.90 is: 4,692.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,526.43 : 15,786.90 = 3,128.90 : x
  2. Step 2: Convert to fraction form
    10,526.43/15,786.90 = 3,128.90/x
  3. Step 3: Cross multiply
    10,526.43x = 15,786.90 × 3,128.90
  4. Step 4: Simplify right side
    10,526.43x = 49,395,670.88
  5. Step 5: Solve for x
    x = 49,395,670.88/10,526.43
  6. Step 6: Final answer
    x = 4,692.54

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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.