Home / 13,319.30-19,981.12-4,999.96

Finding the Fourth Proportional to 13,319.30, 19,981.12 and 4,999.96

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Solution

The fourth proportional to 13,319.30, 19,981.12 and 4,999.96 is: 7,500.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.30 : 19,981.12 = 4,999.96 : x
  2. Step 2: Convert to fraction form
    13,319.30/19,981.12 = 4,999.96/x
  3. Step 3: Cross multiply
    13,319.30x = 19,981.12 × 4,999.96
  4. Step 4: Simplify right side
    13,319.30x = 99,904,800.76
  5. Step 5: Solve for x
    x = 99,904,800.76/13,319.30
  6. Step 6: Final answer
    x = 7,500.75

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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.