Home / 28,724.08-39,669.24-19,794.64

Finding the Fourth Proportional to 28,724.08, 39,669.24 and 19,794.64

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Solution

The fourth proportional to 28,724.08, 39,669.24 and 19,794.64 is: 27,337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,724.08 : 39,669.24 = 19,794.64 : x
  2. Step 2: Convert to fraction form
    28,724.08/39,669.24 = 19,794.64/x
  3. Step 3: Cross multiply
    28,724.08x = 39,669.24 × 19,794.64
  4. Step 4: Simplify right side
    28,724.08x = 785,238,324.87
  5. Step 5: Solve for x
    x = 785,238,324.87/28,724.08
  6. Step 6: Final answer
    x = 27,337.28

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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.