Home / 12,107.90-16,709.33-6,802.61

Finding the Fourth Proportional to 12,107.90, 16,709.33 and 6,802.61

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Solution

The fourth proportional to 12,107.90, 16,709.33 and 6,802.61 is: 9,387.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.90 : 16,709.33 = 6,802.61 : x
  2. Step 2: Convert to fraction form
    12,107.90/16,709.33 = 6,802.61/x
  3. Step 3: Cross multiply
    12,107.90x = 16,709.33 × 6,802.61
  4. Step 4: Simplify right side
    12,107.90x = 113,666,937.79
  5. Step 5: Solve for x
    x = 113,666,937.79/12,107.90
  6. Step 6: Final answer
    x = 9,387.84

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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.