Home / 10,511.84-15,771.05-3,116.34

Finding the Fourth Proportional to 10,511.84, 15,771.05 and 3,116.34

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Solution

The fourth proportional to 10,511.84, 15,771.05 and 3,116.34 is: 4,675.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.84 : 15,771.05 = 3,116.34 : x
  2. Step 2: Convert to fraction form
    10,511.84/15,771.05 = 3,116.34/x
  3. Step 3: Cross multiply
    10,511.84x = 15,771.05 × 3,116.34
  4. Step 4: Simplify right side
    10,511.84x = 49,147,938.38
  5. Step 5: Solve for x
    x = 49,147,938.38/10,511.84
  6. Step 6: Final answer
    x = 4,675.49

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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.