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Finding the Fourth Proportional to 19,800.35, 29,705.12 and 5,760.71

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Solution

The fourth proportional to 19,800.35, 29,705.12 and 5,760.71 is: 8,642.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,800.35 : 29,705.12 = 5,760.71 : x
  2. Step 2: Convert to fraction form
    19,800.35/29,705.12 = 5,760.71/x
  3. Step 3: Cross multiply
    19,800.35x = 29,705.12 × 5,760.71
  4. Step 4: Simplify right side
    19,800.35x = 171,122,404.51
  5. Step 5: Solve for x
    x = 171,122,404.51/19,800.35
  6. Step 6: Final answer
    x = 8,642.40

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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.