Home / 38,775.05-53,505.79-21,775.43

Finding the Fourth Proportional to 38,775.05, 53,505.79 and 21,775.43

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Solution

The fourth proportional to 38,775.05, 53,505.79 and 21,775.43 is: 30,047.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,775.05 : 53,505.79 = 21,775.43 : x
  2. Step 2: Convert to fraction form
    38,775.05/53,505.79 = 21,775.43/x
  3. Step 3: Cross multiply
    38,775.05x = 53,505.79 × 21,775.43
  4. Step 4: Simplify right side
    38,775.05x = 1,165,111,584.74
  5. Step 5: Solve for x
    x = 1,165,111,584.74/38,775.05
  6. Step 6: Final answer
    x = 30,047.97

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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.