Home / 28,682.71-39,571.08-21,146.92

Finding the Fourth Proportional to 28,682.71, 39,571.08 and 21,146.92

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Solution

The fourth proportional to 28,682.71, 39,571.08 and 21,146.92 is: 29,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682.71 : 39,571.08 = 21,146.92 : x
  2. Step 2: Convert to fraction form
    28,682.71/39,571.08 = 21,146.92/x
  3. Step 3: Cross multiply
    28,682.71x = 39,571.08 × 21,146.92
  4. Step 4: Simplify right side
    28,682.71x = 836,806,626.38
  5. Step 5: Solve for x
    x = 836,806,626.38/28,682.71
  6. Step 6: Final answer
    x = 29,174.60

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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.