Home / 11,429.96-15,776.40-6,717.38

Finding the Fourth Proportional to 11,429.96, 15,776.40 and 6,717.38

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Solution

The fourth proportional to 11,429.96, 15,776.40 and 6,717.38 is: 9,271.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,429.96 : 15,776.40 = 6,717.38 : x
  2. Step 2: Convert to fraction form
    11,429.96/15,776.40 = 6,717.38/x
  3. Step 3: Cross multiply
    11,429.96x = 15,776.40 × 6,717.38
  4. Step 4: Simplify right side
    11,429.96x = 105,976,073.83
  5. Step 5: Solve for x
    x = 105,976,073.83/11,429.96
  6. Step 6: Final answer
    x = 9,271.78

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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.