Home / 14,780.09-20,395.71-8,405.82

Finding the Fourth Proportional to 14,780.09, 20,395.71 and 8,405.82

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Solution

The fourth proportional to 14,780.09, 20,395.71 and 8,405.82 is: 11,599.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.09 : 20,395.71 = 8,405.82 : x
  2. Step 2: Convert to fraction form
    14,780.09/20,395.71 = 8,405.82/x
  3. Step 3: Cross multiply
    14,780.09x = 20,395.71 × 8,405.82
  4. Step 4: Simplify right side
    14,780.09x = 171,442,625.00
  5. Step 5: Solve for x
    x = 171,442,625.00/14,780.09
  6. Step 6: Final answer
    x = 11,599.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.