Home / 13,156.89-19,735.50-4,391.81

Finding the Fourth Proportional to 13,156.89, 19,735.50 and 4,391.81

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Solution

The fourth proportional to 13,156.89, 19,735.50 and 4,391.81 is: 6,587.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.89 : 19,735.50 = 4,391.81 : x
  2. Step 2: Convert to fraction form
    13,156.89/19,735.50 = 4,391.81/x
  3. Step 3: Cross multiply
    13,156.89x = 19,735.50 × 4,391.81
  4. Step 4: Simplify right side
    13,156.89x = 86,674,467.58
  5. Step 5: Solve for x
    x = 86,674,467.58/13,156.89
  6. Step 6: Final answer
    x = 6,587.76

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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.