Home / 12,305.89-16,982.15-7,000.79

Finding the Fourth Proportional to 12,305.89, 16,982.15 and 7,000.79

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Solution

The fourth proportional to 12,305.89, 16,982.15 and 7,000.79 is: 9,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.89 : 16,982.15 = 7,000.79 : x
  2. Step 2: Convert to fraction form
    12,305.89/16,982.15 = 7,000.79/x
  3. Step 3: Cross multiply
    12,305.89x = 16,982.15 × 7,000.79
  4. Step 4: Simplify right side
    12,305.89x = 118,888,465.90
  5. Step 5: Solve for x
    x = 118,888,465.90/12,305.89
  6. Step 6: Final answer
    x = 9,661.10

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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.