Home / 14,520.16-21,780.18-4,131.88

Finding the Fourth Proportional to 14,520.16, 21,780.18 and 4,131.88

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Solution

The fourth proportional to 14,520.16, 21,780.18 and 4,131.88 is: 6,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,520.16 : 21,780.18 = 4,131.88 : x
  2. Step 2: Convert to fraction form
    14,520.16/21,780.18 = 4,131.88/x
  3. Step 3: Cross multiply
    14,520.16x = 21,780.18 × 4,131.88
  4. Step 4: Simplify right side
    14,520.16x = 89,993,090.14
  5. Step 5: Solve for x
    x = 89,993,090.14/14,520.16
  6. Step 6: Final answer
    x = 6,197.80

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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.