Home / 20,682.12-28,551.24-12,731.16

Finding the Fourth Proportional to 20,682.12, 28,551.24 and 12,731.16

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Solution

The fourth proportional to 20,682.12, 28,551.24 and 12,731.16 is: 17,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.12 : 28,551.24 = 12,731.16 : x
  2. Step 2: Convert to fraction form
    20,682.12/28,551.24 = 12,731.16/x
  3. Step 3: Cross multiply
    20,682.12x = 28,551.24 × 12,731.16
  4. Step 4: Simplify right side
    20,682.12x = 363,490,404.64
  5. Step 5: Solve for x
    x = 363,490,404.64/20,682.12
  6. Step 6: Final answer
    x = 17,575.10

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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.