Home / 55,203.28-82,782.20-21,918.80

Finding the Fourth Proportional to 55,203.28, 82,782.20 and 21,918.80

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Solution

The fourth proportional to 55,203.28, 82,782.20 and 21,918.80 is: 32,869.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,203.28 : 82,782.20 = 21,918.80 : x
  2. Step 2: Convert to fraction form
    55,203.28/82,782.20 = 21,918.80/x
  3. Step 3: Cross multiply
    55,203.28x = 82,782.20 × 21,918.80
  4. Step 4: Simplify right side
    55,203.28x = 1,814,486,485.36
  5. Step 5: Solve for x
    x = 1,814,486,485.36/55,203.28
  6. Step 6: Final answer
    x = 32,869.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.