Home / 12,127.92-16,734.36-6,820.80

Finding the Fourth Proportional to 12,127.92, 16,734.36 and 6,820.80

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Solution

The fourth proportional to 12,127.92, 16,734.36 and 6,820.80 is: 9,411.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.92 : 16,734.36 = 6,820.80 : x
  2. Step 2: Convert to fraction form
    12,127.92/16,734.36 = 6,820.80/x
  3. Step 3: Cross multiply
    12,127.92x = 16,734.36 × 6,820.80
  4. Step 4: Simplify right side
    12,127.92x = 114,141,722.69
  5. Step 5: Solve for x
    x = 114,141,722.69/12,127.92
  6. Step 6: Final answer
    x = 9,411.48

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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.