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Finding the Fourth Proportional to 17,809.40, 26,678.32 and 8,308.28

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Solution

The fourth proportional to 17,809.40, 26,678.32 and 8,308.28 is: 12,445.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,809.40 : 26,678.32 = 8,308.28 : x
  2. Step 2: Convert to fraction form
    17,809.40/26,678.32 = 8,308.28/x
  3. Step 3: Cross multiply
    17,809.40x = 26,678.32 × 8,308.28
  4. Step 4: Simplify right side
    17,809.40x = 221,650,952.49
  5. Step 5: Solve for x
    x = 221,650,952.49/17,809.40
  6. Step 6: Final answer
    x = 12,445.73

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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.