Home / 28,161.72-38,827.89-18,072.36

Finding the Fourth Proportional to 28,161.72, 38,827.89 and 18,072.36

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Solution

The fourth proportional to 28,161.72, 38,827.89 and 18,072.36 is: 24,917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.72 : 38,827.89 = 18,072.36 : x
  2. Step 2: Convert to fraction form
    28,161.72/38,827.89 = 18,072.36/x
  3. Step 3: Cross multiply
    28,161.72x = 38,827.89 × 18,072.36
  4. Step 4: Simplify right side
    28,161.72x = 701,711,606.12
  5. Step 5: Solve for x
    x = 701,711,606.12/28,161.72
  6. Step 6: Final answer
    x = 24,917.21

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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.