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Finding the Fourth Proportional to 19,800.86, 27,354.86 and 13,011.03

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Solution

The fourth proportional to 19,800.86, 27,354.86 and 13,011.03 is: 17,974.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,800.86 : 27,354.86 = 13,011.03 : x
  2. Step 2: Convert to fraction form
    19,800.86/27,354.86 = 13,011.03/x
  3. Step 3: Cross multiply
    19,800.86x = 27,354.86 × 13,011.03
  4. Step 4: Simplify right side
    19,800.86x = 355,914,839.05
  5. Step 5: Solve for x
    x = 355,914,839.05/19,800.86
  6. Step 6: Final answer
    x = 17,974.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.