Home / 11,685.15-17,511.39-6,421.23

Finding the Fourth Proportional to 11,685.15, 17,511.39 and 6,421.23

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Solution

The fourth proportional to 11,685.15, 17,511.39 and 6,421.23 is: 9,622.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.15 : 17,511.39 = 6,421.23 : x
  2. Step 2: Convert to fraction form
    11,685.15/17,511.39 = 6,421.23/x
  3. Step 3: Cross multiply
    11,685.15x = 17,511.39 × 6,421.23
  4. Step 4: Simplify right side
    11,685.15x = 112,444,662.81
  5. Step 5: Solve for x
    x = 112,444,662.81/11,685.15
  6. Step 6: Final answer
    x = 9,622.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.