Home / 38,161.12-52,662.78-21,165.70

Finding the Fourth Proportional to 38,161.12, 52,662.78 and 21,165.70

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Solution

The fourth proportional to 38,161.12, 52,662.78 and 21,165.70 is: 29,208.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,161.12 : 52,662.78 = 21,165.70 : x
  2. Step 2: Convert to fraction form
    38,161.12/52,662.78 = 21,165.70/x
  3. Step 3: Cross multiply
    38,161.12x = 52,662.78 × 21,165.70
  4. Step 4: Simplify right side
    38,161.12x = 1,114,644,602.65
  5. Step 5: Solve for x
    x = 1,114,644,602.65/38,161.12
  6. Step 6: Final answer
    x = 29,208.91

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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.