Home / 21,537.45-29,715.26-13,042.71

Finding the Fourth Proportional to 21,537.45, 29,715.26 and 13,042.71

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Solution

The fourth proportional to 21,537.45, 29,715.26 and 13,042.71 is: 17,995.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,537.45 : 29,715.26 = 13,042.71 : x
  2. Step 2: Convert to fraction form
    21,537.45/29,715.26 = 13,042.71/x
  3. Step 3: Cross multiply
    21,537.45x = 29,715.26 × 13,042.71
  4. Step 4: Simplify right side
    21,537.45x = 387,567,453.54
  5. Step 5: Solve for x
    x = 387,567,453.54/21,537.45
  6. Step 6: Final answer
    x = 17,995.05

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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.