Home / 10,511.21-15,768.47-3,116.41

Finding the Fourth Proportional to 10,511.21, 15,768.47 and 3,116.41

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Solution

The fourth proportional to 10,511.21, 15,768.47 and 3,116.41 is: 4,675.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.21 : 15,768.47 = 3,116.41 : x
  2. Step 2: Convert to fraction form
    10,511.21/15,768.47 = 3,116.41/x
  3. Step 3: Cross multiply
    10,511.21x = 15,768.47 × 3,116.41
  4. Step 4: Simplify right side
    10,511.21x = 49,140,985.96
  5. Step 5: Solve for x
    x = 49,140,985.96/10,511.21
  6. Step 6: Final answer
    x = 4,675.10

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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.