Home / 28,379.85-39,163.28-16,894.72

Finding the Fourth Proportional to 28,379.85, 39,163.28 and 16,894.72

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Solution

The fourth proportional to 28,379.85, 39,163.28 and 16,894.72 is: 23,314.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.85 : 39,163.28 = 16,894.72 : x
  2. Step 2: Convert to fraction form
    28,379.85/39,163.28 = 16,894.72/x
  3. Step 3: Cross multiply
    28,379.85x = 39,163.28 × 16,894.72
  4. Step 4: Simplify right side
    28,379.85x = 661,652,649.88
  5. Step 5: Solve for x
    x = 661,652,649.88/28,379.85
  6. Step 6: Final answer
    x = 23,314.17

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1.5x scale

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.