Home / 28,621.54-39,493.96-15,874.57

Finding the Fourth Proportional to 28,621.54, 39,493.96 and 15,874.57

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Solution

The fourth proportional to 28,621.54, 39,493.96 and 15,874.57 is: 21,904.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.54 : 39,493.96 = 15,874.57 : x
  2. Step 2: Convert to fraction form
    28,621.54/39,493.96 = 15,874.57/x
  3. Step 3: Cross multiply
    28,621.54x = 39,493.96 × 15,874.57
  4. Step 4: Simplify right side
    28,621.54x = 626,949,632.60
  5. Step 5: Solve for x
    x = 626,949,632.60/28,621.54
  6. Step 6: Final answer
    x = 21,904.82

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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.