Home / 28,579.70-39,439.07-15,832.36

Finding the Fourth Proportional to 28,579.70, 39,439.07 and 15,832.36

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Solution

The fourth proportional to 28,579.70, 39,439.07 and 15,832.36 is: 21,848.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.70 : 39,439.07 = 15,832.36 : x
  2. Step 2: Convert to fraction form
    28,579.70/39,439.07 = 15,832.36/x
  3. Step 3: Cross multiply
    28,579.70x = 39,439.07 × 15,832.36
  4. Step 4: Simplify right side
    28,579.70x = 624,413,554.31
  5. Step 5: Solve for x
    x = 624,413,554.31/28,579.70
  6. Step 6: Final answer
    x = 21,848.15

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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.