Home / 11,406.34-15,739.68-6,689.71

Finding the Fourth Proportional to 11,406.34, 15,739.68 and 6,689.71

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Solution

The fourth proportional to 11,406.34, 15,739.68 and 6,689.71 is: 9,231.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,406.34 : 15,739.68 = 6,689.71 : x
  2. Step 2: Convert to fraction form
    11,406.34/15,739.68 = 6,689.71/x
  3. Step 3: Cross multiply
    11,406.34x = 15,739.68 × 6,689.71
  4. Step 4: Simplify right side
    11,406.34x = 105,293,894.69
  5. Step 5: Solve for x
    x = 105,293,894.69/11,406.34
  6. Step 6: Final answer
    x = 9,231.17

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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.