Home / 10,551.56-15,829.67-3,977.80

Finding the Fourth Proportional to 10,551.56, 15,829.67 and 3,977.80

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Solution

The fourth proportional to 10,551.56, 15,829.67 and 3,977.80 is: 5,967.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,551.56 : 15,829.67 = 3,977.80 : x
  2. Step 2: Convert to fraction form
    10,551.56/15,829.67 = 3,977.80/x
  3. Step 3: Cross multiply
    10,551.56x = 15,829.67 × 3,977.80
  4. Step 4: Simplify right side
    10,551.56x = 62,967,231.70
  5. Step 5: Solve for x
    x = 62,967,231.70/10,551.56
  6. Step 6: Final answer
    x = 5,967.58

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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.