Home / 13,001.63-19,499.18-3,639.22

Finding the Fourth Proportional to 13,001.63, 19,499.18 and 3,639.22

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Solution

The fourth proportional to 13,001.63, 19,499.18 and 3,639.22 is: 5,457.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,001.63 : 19,499.18 = 3,639.22 : x
  2. Step 2: Convert to fraction form
    13,001.63/19,499.18 = 3,639.22/x
  3. Step 3: Cross multiply
    13,001.63x = 19,499.18 × 3,639.22
  4. Step 4: Simplify right side
    13,001.63x = 70,961,738.90
  5. Step 5: Solve for x
    x = 70,961,738.90/13,001.63
  6. Step 6: Final answer
    x = 5,457.91

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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.