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Finding the Fourth Proportional to 26,958, 37,202.04 and 15,780

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Solution

The fourth proportional to 26,958, 37,202.04 and 15,780 is: 21,776.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,958 : 37,202.04 = 15,780 : x
  2. Step 2: Convert to fraction form
    26,958/37,202.04 = 15,780/x
  3. Step 3: Cross multiply
    26,958x = 37,202.04 × 15,780
  4. Step 4: Simplify right side
    26,958x = 587,048,191.20
  5. Step 5: Solve for x
    x = 587,048,191.20/26,958
  6. Step 6: Final answer
    x = 21,776.40

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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.