Home / 21,042.54-29,041.88-13,497.39

Finding the Fourth Proportional to 21,042.54, 29,041.88 and 13,497.39

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Solution

The fourth proportional to 21,042.54, 29,041.88 and 13,497.39 is: 18,628.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.54 : 29,041.88 = 13,497.39 : x
  2. Step 2: Convert to fraction form
    21,042.54/29,041.88 = 13,497.39/x
  3. Step 3: Cross multiply
    21,042.54x = 29,041.88 × 13,497.39
  4. Step 4: Simplify right side
    21,042.54x = 391,989,513.21
  5. Step 5: Solve for x
    x = 391,989,513.21/21,042.54
  6. Step 6: Final answer
    x = 18,628.43

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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.