Home / 11,420.76-15,756.12-6,942.84

Finding the Fourth Proportional to 11,420.76, 15,756.12 and 6,942.84

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Solution

The fourth proportional to 11,420.76, 15,756.12 and 6,942.84 is: 9,578.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.76 : 15,756.12 = 6,942.84 : x
  2. Step 2: Convert to fraction form
    11,420.76/15,756.12 = 6,942.84/x
  3. Step 3: Cross multiply
    11,420.76x = 15,756.12 × 6,942.84
  4. Step 4: Simplify right side
    11,420.76x = 109,392,220.18
  5. Step 5: Solve for x
    x = 109,392,220.18/11,420.76
  6. Step 6: Final answer
    x = 9,578.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.