Home / 38,513.27-53,141.83-21,516.86

Finding the Fourth Proportional to 38,513.27, 53,141.83 and 21,516.86

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Solution

The fourth proportional to 38,513.27, 53,141.83 and 21,516.86 is: 29,689.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,513.27 : 53,141.83 = 21,516.86 : x
  2. Step 2: Convert to fraction form
    38,513.27/53,141.83 = 21,516.86/x
  3. Step 3: Cross multiply
    38,513.27x = 53,141.83 × 21,516.86
  4. Step 4: Simplify right side
    38,513.27x = 1,143,445,316.25
  5. Step 5: Solve for x
    x = 1,143,445,316.25/38,513.27
  6. Step 6: Final answer
    x = 29,689.65

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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.