Home / 38,516.14-53,151.82-21,520.72

Finding the Fourth Proportional to 38,516.14, 53,151.82 and 21,520.72

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Solution

The fourth proportional to 38,516.14, 53,151.82 and 21,520.72 is: 29,698.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,516.14 : 53,151.82 = 21,520.72 : x
  2. Step 2: Convert to fraction form
    38,516.14/53,151.82 = 21,520.72/x
  3. Step 3: Cross multiply
    38,516.14x = 53,151.82 × 21,520.72
  4. Step 4: Simplify right side
    38,516.14x = 1,143,865,435.71
  5. Step 5: Solve for x
    x = 1,143,865,435.71/38,516.14
  6. Step 6: Final answer
    x = 29,698.34

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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.