Home / 28,741.40-39,651.87-21,205.82

Finding the Fourth Proportional to 28,741.40, 39,651.87 and 21,205.82

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Solution

The fourth proportional to 28,741.40, 39,651.87 and 21,205.82 is: 29,255.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,741.40 : 39,651.87 = 21,205.82 : x
  2. Step 2: Convert to fraction form
    28,741.40/39,651.87 = 21,205.82/x
  3. Step 3: Cross multiply
    28,741.40x = 39,651.87 × 21,205.82
  4. Step 4: Simplify right side
    28,741.40x = 840,850,219.62
  5. Step 5: Solve for x
    x = 840,850,219.62/28,741.40
  6. Step 6: Final answer
    x = 29,255.72

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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.