Home / 11,800.20-16,300.86-11,178.12

Finding the Fourth Proportional to 11,800.20, 16,300.86 and 11,178.12

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Solution

The fourth proportional to 11,800.20, 16,300.86 and 11,178.12 is: 15,441.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,800.20 : 16,300.86 = 11,178.12 : x
  2. Step 2: Convert to fraction form
    11,800.20/16,300.86 = 11,178.12/x
  3. Step 3: Cross multiply
    11,800.20x = 16,300.86 × 11,178.12
  4. Step 4: Simplify right side
    11,800.20x = 182,212,969.18
  5. Step 5: Solve for x
    x = 182,212,969.18/11,800.20
  6. Step 6: Final answer
    x = 15,441.52

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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.