Home / 28,939.72-39,925.05-18,864.62

Finding the Fourth Proportional to 28,939.72, 39,925.05 and 18,864.62

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Solution

The fourth proportional to 28,939.72, 39,925.05 and 18,864.62 is: 26,025.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.72 : 39,925.05 = 18,864.62 : x
  2. Step 2: Convert to fraction form
    28,939.72/39,925.05 = 18,864.62/x
  3. Step 3: Cross multiply
    28,939.72x = 39,925.05 × 18,864.62
  4. Step 4: Simplify right side
    28,939.72x = 753,170,896.73
  5. Step 5: Solve for x
    x = 753,170,896.73/28,939.72
  6. Step 6: Final answer
    x = 26,025.51

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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.