Home / 21,228.58-29,297.73-12,275.92

Finding the Fourth Proportional to 21,228.58, 29,297.73 and 12,275.92

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Solution

The fourth proportional to 21,228.58, 29,297.73 and 12,275.92 is: 16,942.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.58 : 29,297.73 = 12,275.92 : x
  2. Step 2: Convert to fraction form
    21,228.58/29,297.73 = 12,275.92/x
  3. Step 3: Cross multiply
    21,228.58x = 29,297.73 × 12,275.92
  4. Step 4: Simplify right side
    21,228.58x = 359,656,589.66
  5. Step 5: Solve for x
    x = 359,656,589.66/21,228.58
  6. Step 6: Final answer
    x = 16,942.09

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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.