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Finding the Fourth Proportional to 19,578.96, 29,384.76 and 18,348.88

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Solution

The fourth proportional to 19,578.96, 29,384.76 and 18,348.88 is: 27,538.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,578.96 : 29,384.76 = 18,348.88 : x
  2. Step 2: Convert to fraction form
    19,578.96/29,384.76 = 18,348.88/x
  3. Step 3: Cross multiply
    19,578.96x = 29,384.76 × 18,348.88
  4. Step 4: Simplify right side
    19,578.96x = 539,177,435.07
  5. Step 5: Solve for x
    x = 539,177,435.07/19,578.96
  6. Step 6: Final answer
    x = 27,538.61

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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.