Home / 11,780.29-17,672.28-4,385.80

Finding the Fourth Proportional to 11,780.29, 17,672.28 and 4,385.80

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Solution

The fourth proportional to 11,780.29, 17,672.28 and 4,385.80 is: 6,579.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,780.29 : 17,672.28 = 4,385.80 : x
  2. Step 2: Convert to fraction form
    11,780.29/17,672.28 = 4,385.80/x
  3. Step 3: Cross multiply
    11,780.29x = 17,672.28 × 4,385.80
  4. Step 4: Simplify right side
    11,780.29x = 77,507,085.62
  5. Step 5: Solve for x
    x = 77,507,085.62/11,780.29
  6. Step 6: Final answer
    x = 6,579.39

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1.5x scale

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.