Home / 14,256.87-21,390.05-8,985.79

Finding the Fourth Proportional to 14,256.87, 21,390.05 and 8,985.79

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Solution

The fourth proportional to 14,256.87, 21,390.05 and 8,985.79 is: 13,481.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,256.87 : 21,390.05 = 8,985.79 : x
  2. Step 2: Convert to fraction form
    14,256.87/21,390.05 = 8,985.79/x
  3. Step 3: Cross multiply
    14,256.87x = 21,390.05 × 8,985.79
  4. Step 4: Simplify right side
    14,256.87x = 192,206,497.39
  5. Step 5: Solve for x
    x = 192,206,497.39/14,256.87
  6. Step 6: Final answer
    x = 13,481.68

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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.