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Finding the Fourth Proportional to 17,977.57, 26,978.51 and 6,290.89

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Solution

The fourth proportional to 17,977.57, 26,978.51 and 6,290.89 is: 9,440.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,977.57 : 26,978.51 = 6,290.89 : x
  2. Step 2: Convert to fraction form
    17,977.57/26,978.51 = 6,290.89/x
  3. Step 3: Cross multiply
    17,977.57x = 26,978.51 × 6,290.89
  4. Step 4: Simplify right side
    17,977.57x = 169,718,838.77
  5. Step 5: Solve for x
    x = 169,718,838.77/17,977.57
  6. Step 6: Final answer
    x = 9,440.59

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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.