Home / 9,986.97-13,779.56-6,105.40

Finding the Fourth Proportional to 9,986.97, 13,779.56 and 6,105.40

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Solution

The fourth proportional to 9,986.97, 13,779.56 and 6,105.40 is: 8,423.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.97 : 13,779.56 = 6,105.40 : x
  2. Step 2: Convert to fraction form
    9,986.97/13,779.56 = 6,105.40/x
  3. Step 3: Cross multiply
    9,986.97x = 13,779.56 × 6,105.40
  4. Step 4: Simplify right side
    9,986.97x = 84,129,660.65
  5. Step 5: Solve for x
    x = 84,129,660.65/9,986.97
  6. Step 6: Final answer
    x = 8,423.94

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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.