Home / 38,739.06-53,460.81-21,972.06

Finding the Fourth Proportional to 38,739.06, 53,460.81 and 21,972.06

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Solution

The fourth proportional to 38,739.06, 53,460.81 and 21,972.06 is: 30,321.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,739.06 : 53,460.81 = 21,972.06 : x
  2. Step 2: Convert to fraction form
    38,739.06/53,460.81 = 21,972.06/x
  3. Step 3: Cross multiply
    38,739.06x = 53,460.81 × 21,972.06
  4. Step 4: Simplify right side
    38,739.06x = 1,174,644,124.97
  5. Step 5: Solve for x
    x = 1,174,644,124.97/38,739.06
  6. Step 6: Final answer
    x = 30,321.96

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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.