Home / 38,662.64-57,970.68-21,108.08

Finding the Fourth Proportional to 38,662.64, 57,970.68 and 21,108.08

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Solution

The fourth proportional to 38,662.64, 57,970.68 and 21,108.08 is: 31,649.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,662.64 : 57,970.68 = 21,108.08 : x
  2. Step 2: Convert to fraction form
    38,662.64/57,970.68 = 21,108.08/x
  3. Step 3: Cross multiply
    38,662.64x = 57,970.68 × 21,108.08
  4. Step 4: Simplify right side
    38,662.64x = 1,223,649,751.09
  5. Step 5: Solve for x
    x = 1,223,649,751.09/38,662.64
  6. Step 6: Final answer
    x = 31,649.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.