Home / 28,579.70-39,440.15-15,833.28

Finding the Fourth Proportional to 28,579.70, 39,440.15 and 15,833.28

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Solution

The fourth proportional to 28,579.70, 39,440.15 and 15,833.28 is: 21,850.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.70 : 39,440.15 = 15,833.28 : x
  2. Step 2: Convert to fraction form
    28,579.70/39,440.15 = 15,833.28/x
  3. Step 3: Cross multiply
    28,579.70x = 39,440.15 × 15,833.28
  4. Step 4: Simplify right side
    28,579.70x = 624,466,859.03
  5. Step 5: Solve for x
    x = 624,466,859.03/28,579.70
  6. Step 6: Final answer
    x = 21,850.02

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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.