Home / 14,187.96-21,281.13-5,418.90

Finding the Fourth Proportional to 14,187.96, 21,281.13 and 5,418.90

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Solution

The fourth proportional to 14,187.96, 21,281.13 and 5,418.90 is: 8,128.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.96 : 21,281.13 = 5,418.90 : x
  2. Step 2: Convert to fraction form
    14,187.96/21,281.13 = 5,418.90/x
  3. Step 3: Cross multiply
    14,187.96x = 21,281.13 × 5,418.90
  4. Step 4: Simplify right side
    14,187.96x = 115,320,315.36
  5. Step 5: Solve for x
    x = 115,320,315.36/14,187.96
  6. Step 6: Final answer
    x = 8,128.04

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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.