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Finding the Fourth Proportional to 9,999.32, 14,999.92 and 2,603.76

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Solution

The fourth proportional to 9,999.32, 14,999.92 and 2,603.76 is: 3,905.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.32 : 14,999.92 = 2,603.76 : x
  2. Step 2: Convert to fraction form
    9,999.32/14,999.92 = 2,603.76/x
  3. Step 3: Cross multiply
    9,999.32x = 14,999.92 × 2,603.76
  4. Step 4: Simplify right side
    9,999.32x = 39,056,191.70
  5. Step 5: Solve for x
    x = 39,056,191.70/9,999.32
  6. Step 6: Final answer
    x = 3,905.88

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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.