Home / 12,020-16,622.16-11,469.92

Finding the Fourth Proportional to 12,020, 16,622.16 and 11,469.92

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Solution

The fourth proportional to 12,020, 16,622.16 and 11,469.92 is: 15,861.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020 : 16,622.16 = 11,469.92 : x
  2. Step 2: Convert to fraction form
    12,020/16,622.16 = 11,469.92/x
  3. Step 3: Cross multiply
    12,020x = 16,622.16 × 11,469.92
  4. Step 4: Simplify right side
    12,020x = 190,654,845.43
  5. Step 5: Solve for x
    x = 190,654,845.43/12,020
  6. Step 6: Final answer
    x = 15,861.47

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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.