Home / 20,646.21-28,491.89-12,262.53

Finding the Fourth Proportional to 20,646.21, 28,491.89 and 12,262.53

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Solution

The fourth proportional to 20,646.21, 28,491.89 and 12,262.53 is: 16,922.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.21 : 28,491.89 = 12,262.53 : x
  2. Step 2: Convert to fraction form
    20,646.21/28,491.89 = 12,262.53/x
  3. Step 3: Cross multiply
    20,646.21x = 28,491.89 × 12,262.53
  4. Step 4: Simplify right side
    20,646.21x = 349,382,594.57
  5. Step 5: Solve for x
    x = 349,382,594.57/20,646.21
  6. Step 6: Final answer
    x = 16,922.36

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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.