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Finding the Fourth Proportional to 13,335.05, 20,000.09 and 4,899.71

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Solution

The fourth proportional to 13,335.05, 20,000.09 and 4,899.71 is: 7,348.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.05 : 20,000.09 = 4,899.71 : x
  2. Step 2: Convert to fraction form
    13,335.05/20,000.09 = 4,899.71/x
  3. Step 3: Cross multiply
    13,335.05x = 20,000.09 × 4,899.71
  4. Step 4: Simplify right side
    13,335.05x = 97,994,553.22
  5. Step 5: Solve for x
    x = 97,994,553.22/13,335.05
  6. Step 6: Final answer
    x = 7,348.65

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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.