Home / 21,903.12-32,862.24-12,029.76

Finding the Fourth Proportional to 21,903.12, 32,862.24 and 12,029.76

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Solution

The fourth proportional to 21,903.12, 32,862.24 and 12,029.76 is: 18,048.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.12 : 32,862.24 = 12,029.76 : x
  2. Step 2: Convert to fraction form
    21,903.12/32,862.24 = 12,029.76/x
  3. Step 3: Cross multiply
    21,903.12x = 32,862.24 × 12,029.76
  4. Step 4: Simplify right side
    21,903.12x = 395,324,860.26
  5. Step 5: Solve for x
    x = 395,324,860.26/21,903.12
  6. Step 6: Final answer
    x = 18,048.79

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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.