Home / 21,959.48-30,243.30-18,974.36

Finding the Fourth Proportional to 21,959.48, 30,243.30 and 18,974.36

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Solution

The fourth proportional to 21,959.48, 30,243.30 and 18,974.36 is: 26,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.48 : 30,243.30 = 18,974.36 : x
  2. Step 2: Convert to fraction form
    21,959.48/30,243.30 = 18,974.36/x
  3. Step 3: Cross multiply
    21,959.48x = 30,243.30 × 18,974.36
  4. Step 4: Simplify right side
    21,959.48x = 573,847,261.79
  5. Step 5: Solve for x
    x = 573,847,261.79/21,959.48
  6. Step 6: Final answer
    x = 26,132.10

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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.