Home / 28,772.70-39,659.67-28,383.90

Finding the Fourth Proportional to 28,772.70, 39,659.67 and 28,383.90

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Solution

The fourth proportional to 28,772.70, 39,659.67 and 28,383.90 is: 39,123.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,772.70 : 39,659.67 = 28,383.90 : x
  2. Step 2: Convert to fraction form
    28,772.70/39,659.67 = 28,383.90/x
  3. Step 3: Cross multiply
    28,772.70x = 39,659.67 × 28,383.90
  4. Step 4: Simplify right side
    28,772.70x = 1,125,696,107.31
  5. Step 5: Solve for x
    x = 1,125,696,107.31/28,772.70
  6. Step 6: Final answer
    x = 39,123.76

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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.