Home / 11,985.57-16,516.71-8,622.45

Finding the Fourth Proportional to 11,985.57, 16,516.71 and 8,622.45

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Solution

The fourth proportional to 11,985.57, 16,516.71 and 8,622.45 is: 11,882.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.57 : 16,516.71 = 8,622.45 : x
  2. Step 2: Convert to fraction form
    11,985.57/16,516.71 = 8,622.45/x
  3. Step 3: Cross multiply
    11,985.57x = 16,516.71 × 8,622.45
  4. Step 4: Simplify right side
    11,985.57x = 142,414,506.14
  5. Step 5: Solve for x
    x = 142,414,506.14/11,985.57
  6. Step 6: Final answer
    x = 11,882.16

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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.