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Finding the Fourth Proportional to 17,999.80, 26,999.70 and 6,308.80

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Solution

The fourth proportional to 17,999.80, 26,999.70 and 6,308.80 is: 9,463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,999.80 : 26,999.70 = 6,308.80 : x
  2. Step 2: Convert to fraction form
    17,999.80/26,999.70 = 6,308.80/x
  3. Step 3: Cross multiply
    17,999.80x = 26,999.70 × 6,308.80
  4. Step 4: Simplify right side
    17,999.80x = 170,335,707.36
  5. Step 5: Solve for x
    x = 170,335,707.36/17,999.80
  6. Step 6: Final answer
    x = 9,463.20

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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.