Home / 10,505.26-15,756.58-3,109.56

Finding the Fourth Proportional to 10,505.26, 15,756.58 and 3,109.56

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Solution

The fourth proportional to 10,505.26, 15,756.58 and 3,109.56 is: 4,663.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.26 : 15,756.58 = 3,109.56 : x
  2. Step 2: Convert to fraction form
    10,505.26/15,756.58 = 3,109.56/x
  3. Step 3: Cross multiply
    10,505.26x = 15,756.58 × 3,109.56
  4. Step 4: Simplify right side
    10,505.26x = 48,996,030.90
  5. Step 5: Solve for x
    x = 48,996,030.90/10,505.26
  6. Step 6: Final answer
    x = 4,663.95

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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.