Home / 20,264.51-27,939.69-15,490.37

Finding the Fourth Proportional to 20,264.51, 27,939.69 and 15,490.37

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Solution

The fourth proportional to 20,264.51, 27,939.69 and 15,490.37 is: 21,357.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,264.51 : 27,939.69 = 15,490.37 : x
  2. Step 2: Convert to fraction form
    20,264.51/27,939.69 = 15,490.37/x
  3. Step 3: Cross multiply
    20,264.51x = 27,939.69 × 15,490.37
  4. Step 4: Simplify right side
    20,264.51x = 432,795,996.09
  5. Step 5: Solve for x
    x = 432,795,996.09/20,264.51
  6. Step 6: Final answer
    x = 21,357.34

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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.