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Finding the Fourth Proportional to 19,855.44, 29,783.16 and 8,160.48

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Solution

The fourth proportional to 19,855.44, 29,783.16 and 8,160.48 is: 12,240.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,855.44 : 29,783.16 = 8,160.48 : x
  2. Step 2: Convert to fraction form
    19,855.44/29,783.16 = 8,160.48/x
  3. Step 3: Cross multiply
    19,855.44x = 29,783.16 × 8,160.48
  4. Step 4: Simplify right side
    19,855.44x = 243,044,881.52
  5. Step 5: Solve for x
    x = 243,044,881.52/19,855.44
  6. Step 6: Final answer
    x = 12,240.72

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Similar ratio
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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.