Home / 28,939.86-39,930.57-17,615.25

Finding the Fourth Proportional to 28,939.86, 39,930.57 and 17,615.25

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Solution

The fourth proportional to 28,939.86, 39,930.57 and 17,615.25 is: 24,305.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.86 : 39,930.57 = 17,615.25 : x
  2. Step 2: Convert to fraction form
    28,939.86/39,930.57 = 17,615.25/x
  3. Step 3: Cross multiply
    28,939.86x = 39,930.57 × 17,615.25
  4. Step 4: Simplify right side
    28,939.86x = 703,386,973.19
  5. Step 5: Solve for x
    x = 703,386,973.19/28,939.86
  6. Step 6: Final answer
    x = 24,305.13

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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.