Home / 12,204.90-16,842.20-6,899.40

Finding the Fourth Proportional to 12,204.90, 16,842.20 and 6,899.40

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Solution

The fourth proportional to 12,204.90, 16,842.20 and 6,899.40 is: 9,520.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,204.90 : 16,842.20 = 6,899.40 : x
  2. Step 2: Convert to fraction form
    12,204.90/16,842.20 = 6,899.40/x
  3. Step 3: Cross multiply
    12,204.90x = 16,842.20 × 6,899.40
  4. Step 4: Simplify right side
    12,204.90x = 116,201,040.18
  5. Step 5: Solve for x
    x = 116,201,040.18/12,204.90
  6. Step 6: Final answer
    x = 9,520.85

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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.