Home / 11,868.96-16,378.86-7,830.84

Finding the Fourth Proportional to 11,868.96, 16,378.86 and 7,830.84

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Solution

The fourth proportional to 11,868.96, 16,378.86 and 7,830.84 is: 10,806.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,868.96 : 16,378.86 = 7,830.84 : x
  2. Step 2: Convert to fraction form
    11,868.96/16,378.86 = 7,830.84/x
  3. Step 3: Cross multiply
    11,868.96x = 16,378.86 × 7,830.84
  4. Step 4: Simplify right side
    11,868.96x = 128,260,232.04
  5. Step 5: Solve for x
    x = 128,260,232.04/11,868.96
  6. Step 6: Final answer
    x = 10,806.36

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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.