Home / 10,780.37-16,170.55-4,919.57

Finding the Fourth Proportional to 10,780.37, 16,170.55 and 4,919.57

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Solution

The fourth proportional to 10,780.37, 16,170.55 and 4,919.57 is: 7,379.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780.37 : 16,170.55 = 4,919.57 : x
  2. Step 2: Convert to fraction form
    10,780.37/16,170.55 = 4,919.57/x
  3. Step 3: Cross multiply
    10,780.37x = 16,170.55 × 4,919.57
  4. Step 4: Simplify right side
    10,780.37x = 79,552,059.51
  5. Step 5: Solve for x
    x = 79,552,059.51/10,780.37
  6. Step 6: Final answer
    x = 7,379.35

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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.