Home / 28,640.16-39,523.32-15,895.28

Finding the Fourth Proportional to 28,640.16, 39,523.32 and 15,895.28

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Solution

The fourth proportional to 28,640.16, 39,523.32 and 15,895.28 is: 21,935.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,640.16 : 39,523.32 = 15,895.28 : x
  2. Step 2: Convert to fraction form
    28,640.16/39,523.32 = 15,895.28/x
  3. Step 3: Cross multiply
    28,640.16x = 39,523.32 × 15,895.28
  4. Step 4: Simplify right side
    28,640.16x = 628,234,237.93
  5. Step 5: Solve for x
    x = 628,234,237.93/28,640.16
  6. Step 6: Final answer
    x = 21,935.43

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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.