Home / 38,516.20-53,146.98-21,519.72

Finding the Fourth Proportional to 38,516.20, 53,146.98 and 21,519.72

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Solution

The fourth proportional to 38,516.20, 53,146.98 and 21,519.72 is: 29,694.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,516.20 : 53,146.98 = 21,519.72 : x
  2. Step 2: Convert to fraction form
    38,516.20/53,146.98 = 21,519.72/x
  3. Step 3: Cross multiply
    38,516.20x = 53,146.98 × 21,519.72
  4. Step 4: Simplify right side
    38,516.20x = 1,143,708,128.45
  5. Step 5: Solve for x
    x = 1,143,708,128.45/38,516.20
  6. Step 6: Final answer
    x = 29,694.21

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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.