Home / 21,947.68-30,287.88-20,273.36

Finding the Fourth Proportional to 21,947.68, 30,287.88 and 20,273.36

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Solution

The fourth proportional to 21,947.68, 30,287.88 and 20,273.36 is: 27,977.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.68 : 30,287.88 = 20,273.36 : x
  2. Step 2: Convert to fraction form
    21,947.68/30,287.88 = 20,273.36/x
  3. Step 3: Cross multiply
    21,947.68x = 30,287.88 × 20,273.36
  4. Step 4: Simplify right side
    21,947.68x = 614,037,094.88
  5. Step 5: Solve for x
    x = 614,037,094.88/21,947.68
  6. Step 6: Final answer
    x = 27,977.31

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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.