Home / 28,648.49-39,537.32-15,905.70

Finding the Fourth Proportional to 28,648.49, 39,537.32 and 15,905.70

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Solution

The fourth proportional to 28,648.49, 39,537.32 and 15,905.70 is: 21,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.49 : 39,537.32 = 15,905.70 : x
  2. Step 2: Convert to fraction form
    28,648.49/39,537.32 = 15,905.70/x
  3. Step 3: Cross multiply
    28,648.49x = 39,537.32 × 15,905.70
  4. Step 4: Simplify right side
    28,648.49x = 628,868,671.20
  5. Step 5: Solve for x
    x = 628,868,671.20/28,648.49
  6. Step 6: Final answer
    x = 21,951.20

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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.