Home / 12,161.70-16,783.47-6,856.20

Finding the Fourth Proportional to 12,161.70, 16,783.47 and 6,856.20

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Solution

The fourth proportional to 12,161.70, 16,783.47 and 6,856.20 is: 9,461.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.70 : 16,783.47 = 6,856.20 : x
  2. Step 2: Convert to fraction form
    12,161.70/16,783.47 = 6,856.20/x
  3. Step 3: Cross multiply
    12,161.70x = 16,783.47 × 6,856.20
  4. Step 4: Simplify right side
    12,161.70x = 115,070,827.01
  5. Step 5: Solve for x
    x = 115,070,827.01/12,161.70
  6. Step 6: Final answer
    x = 9,461.74

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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.