Home / 20,106.67-27,729.04-12,553.69

Finding the Fourth Proportional to 20,106.67, 27,729.04 and 12,553.69

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Solution

The fourth proportional to 20,106.67, 27,729.04 and 12,553.69 is: 17,312.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.67 : 27,729.04 = 12,553.69 : x
  2. Step 2: Convert to fraction form
    20,106.67/27,729.04 = 12,553.69/x
  3. Step 3: Cross multiply
    20,106.67x = 27,729.04 × 12,553.69
  4. Step 4: Simplify right side
    20,106.67x = 348,101,772.16
  5. Step 5: Solve for x
    x = 348,101,772.16/20,106.67
  6. Step 6: Final answer
    x = 17,312.75

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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.