Home / 12,138.64-16,750.14-6,833.34

Finding the Fourth Proportional to 12,138.64, 16,750.14 and 6,833.34

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Solution

The fourth proportional to 12,138.64, 16,750.14 and 6,833.34 is: 9,429.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.64 : 16,750.14 = 6,833.34 : x
  2. Step 2: Convert to fraction form
    12,138.64/16,750.14 = 6,833.34/x
  3. Step 3: Cross multiply
    12,138.64x = 16,750.14 × 6,833.34
  4. Step 4: Simplify right side
    12,138.64x = 114,459,401.67
  5. Step 5: Solve for x
    x = 114,459,401.67/12,138.64
  6. Step 6: Final answer
    x = 9,429.34

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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.