Home / 12,161.21-16,782.48-6,856.01

Finding the Fourth Proportional to 12,161.21, 16,782.48 and 6,856.01

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Solution

The fourth proportional to 12,161.21, 16,782.48 and 6,856.01 is: 9,461.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.21 : 16,782.48 = 6,856.01 : x
  2. Step 2: Convert to fraction form
    12,161.21/16,782.48 = 6,856.01/x
  3. Step 3: Cross multiply
    12,161.21x = 16,782.48 × 6,856.01
  4. Step 4: Simplify right side
    12,161.21x = 115,060,766.79
  5. Step 5: Solve for x
    x = 115,060,766.79/12,161.21
  6. Step 6: Final answer
    x = 9,461.29

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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.