Home / 19,678.62-29,503.36-11,885.61

Finding the Fourth Proportional to 19,678.62, 29,503.36 and 11,885.61

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Solution

The fourth proportional to 19,678.62, 29,503.36 and 11,885.61 is: 17,819.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,678.62 : 29,503.36 = 11,885.61 : x
  2. Step 2: Convert to fraction form
    19,678.62/29,503.36 = 11,885.61/x
  3. Step 3: Cross multiply
    19,678.62x = 29,503.36 × 11,885.61
  4. Step 4: Simplify right side
    19,678.62x = 350,665,489.29
  5. Step 5: Solve for x
    x = 350,665,489.29/19,678.62
  6. Step 6: Final answer
    x = 17,819.61

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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.