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Finding the Fourth Proportional to 12,403.97, 17,117.78 and 7,100.49

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Solution

The fourth proportional to 12,403.97, 17,117.78 and 7,100.49 is: 9,798.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,403.97 : 17,117.78 = 7,100.49 : x
  2. Step 2: Convert to fraction form
    12,403.97/17,117.78 = 7,100.49/x
  3. Step 3: Cross multiply
    12,403.97x = 17,117.78 × 7,100.49
  4. Step 4: Simplify right side
    12,403.97x = 121,544,590.21
  5. Step 5: Solve for x
    x = 121,544,590.21/12,403.97
  6. Step 6: Final answer
    x = 9,798.85

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1.5x scale

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.