Home / 11,315.93-15,613.56-6,838.79

Finding the Fourth Proportional to 11,315.93, 15,613.56 and 6,838.79

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Solution

The fourth proportional to 11,315.93, 15,613.56 and 6,838.79 is: 9,436.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.93 : 15,613.56 = 6,838.79 : x
  2. Step 2: Convert to fraction form
    11,315.93/15,613.56 = 6,838.79/x
  3. Step 3: Cross multiply
    11,315.93x = 15,613.56 × 6,838.79
  4. Step 4: Simplify right side
    11,315.93x = 106,777,779.92
  5. Step 5: Solve for x
    x = 106,777,779.92/11,315.93
  6. Step 6: Final answer
    x = 9,436.06

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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.