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Finding the Fourth Proportional to 17,980.18, 26,964.09 and 8,630.75

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Solution

The fourth proportional to 17,980.18, 26,964.09 and 8,630.75 is: 12,943.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,980.18 : 26,964.09 = 8,630.75 : x
  2. Step 2: Convert to fraction form
    17,980.18/26,964.09 = 8,630.75/x
  3. Step 3: Cross multiply
    17,980.18x = 26,964.09 × 8,630.75
  4. Step 4: Simplify right side
    17,980.18x = 232,720,387.18
  5. Step 5: Solve for x
    x = 232,720,387.18/17,980.18
  6. Step 6: Final answer
    x = 12,943.16

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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.