Home / 12,138.21-16,752.30-6,834.06

Finding the Fourth Proportional to 12,138.21, 16,752.30 and 6,834.06

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Solution

The fourth proportional to 12,138.21, 16,752.30 and 6,834.06 is: 9,431.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.21 : 16,752.30 = 6,834.06 : x
  2. Step 2: Convert to fraction form
    12,138.21/16,752.30 = 6,834.06/x
  3. Step 3: Cross multiply
    12,138.21x = 16,752.30 × 6,834.06
  4. Step 4: Simplify right side
    12,138.21x = 114,486,223.34
  5. Step 5: Solve for x
    x = 114,486,223.34/12,138.21
  6. Step 6: Final answer
    x = 9,431.89

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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.