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Finding the Fourth Proportional to 9,999.12, 13,804.68 and 6,859.92

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Solution

The fourth proportional to 9,999.12, 13,804.68 and 6,859.92 is: 9,470.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.12 : 13,804.68 = 6,859.92 : x
  2. Step 2: Convert to fraction form
    9,999.12/13,804.68 = 6,859.92/x
  3. Step 3: Cross multiply
    9,999.12x = 13,804.68 × 6,859.92
  4. Step 4: Simplify right side
    9,999.12x = 94,699,000.43
  5. Step 5: Solve for x
    x = 94,699,000.43/9,999.12
  6. Step 6: Final answer
    x = 9,470.73

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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.