Home / 21,022.56-29,001.24-12,519.86

Finding the Fourth Proportional to 21,022.56, 29,001.24 and 12,519.86

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Solution

The fourth proportional to 21,022.56, 29,001.24 and 12,519.86 is: 17,271.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.56 : 29,001.24 = 12,519.86 : x
  2. Step 2: Convert to fraction form
    21,022.56/29,001.24 = 12,519.86/x
  3. Step 3: Cross multiply
    21,022.56x = 29,001.24 × 12,519.86
  4. Step 4: Simplify right side
    21,022.56x = 363,091,319.62
  5. Step 5: Solve for x
    x = 363,091,319.62/21,022.56
  6. Step 6: Final answer
    x = 17,271.51

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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.