Home / 21,939.24-30,276.38-20,264.98

Finding the Fourth Proportional to 21,939.24, 30,276.38 and 20,264.98

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Solution

The fourth proportional to 21,939.24, 30,276.38 and 20,264.98 is: 27,965.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.24 : 30,276.38 = 20,264.98 : x
  2. Step 2: Convert to fraction form
    21,939.24/30,276.38 = 20,264.98/x
  3. Step 3: Cross multiply
    21,939.24x = 30,276.38 × 20,264.98
  4. Step 4: Simplify right side
    21,939.24x = 613,550,235.17
  5. Step 5: Solve for x
    x = 613,550,235.17/21,939.24
  6. Step 6: Final answer
    x = 27,965.88

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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.