Home / 10,890.06-16,313.22-5,685

Finding the Fourth Proportional to 10,890.06, 16,313.22 and 5,685

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Solution

The fourth proportional to 10,890.06, 16,313.22 and 5,685 is: 8,516.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.06 : 16,313.22 = 5,685 : x
  2. Step 2: Convert to fraction form
    10,890.06/16,313.22 = 5,685/x
  3. Step 3: Cross multiply
    10,890.06x = 16,313.22 × 5,685
  4. Step 4: Simplify right side
    10,890.06x = 92,740,655.70
  5. Step 5: Solve for x
    x = 92,740,655.70/10,890.06
  6. Step 6: Final answer
    x = 8,516.08

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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.