Home / 12,161.54-16,783.40-6,856.55

Finding the Fourth Proportional to 12,161.54, 16,783.40 and 6,856.55

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Solution

The fourth proportional to 12,161.54, 16,783.40 and 6,856.55 is: 9,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.54 : 16,783.40 = 6,856.55 : x
  2. Step 2: Convert to fraction form
    12,161.54/16,783.40 = 6,856.55/x
  3. Step 3: Cross multiply
    12,161.54x = 16,783.40 × 6,856.55
  4. Step 4: Simplify right side
    12,161.54x = 115,076,217.43
  5. Step 5: Solve for x
    x = 115,076,217.43/12,161.54
  6. Step 6: Final answer
    x = 9,462.30

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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.