Home / 13,006.60-19,509.15-3,518.78

Finding the Fourth Proportional to 13,006.60, 19,509.15 and 3,518.78

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Solution

The fourth proportional to 13,006.60, 19,509.15 and 3,518.78 is: 5,277.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,006.60 : 19,509.15 = 3,518.78 : x
  2. Step 2: Convert to fraction form
    13,006.60/19,509.15 = 3,518.78/x
  3. Step 3: Cross multiply
    13,006.60x = 19,509.15 × 3,518.78
  4. Step 4: Simplify right side
    13,006.60x = 68,648,322.49
  5. Step 5: Solve for x
    x = 68,648,322.49/13,006.60
  6. Step 6: Final answer
    x = 5,277.96

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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.