Home / 28,732.87-39,626.12-20,114.64

Finding the Fourth Proportional to 28,732.87, 39,626.12 and 20,114.64

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Solution

The fourth proportional to 28,732.87, 39,626.12 and 20,114.64 is: 27,740.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,732.87 : 39,626.12 = 20,114.64 : x
  2. Step 2: Convert to fraction form
    28,732.87/39,626.12 = 20,114.64/x
  3. Step 3: Cross multiply
    28,732.87x = 39,626.12 × 20,114.64
  4. Step 4: Simplify right side
    28,732.87x = 797,065,138.40
  5. Step 5: Solve for x
    x = 797,065,138.40/28,732.87
  6. Step 6: Final answer
    x = 27,740.53

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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.