Home / 21,127.34-29,179.67-14,401.41

Finding the Fourth Proportional to 21,127.34, 29,179.67 and 14,401.41

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Solution

The fourth proportional to 21,127.34, 29,179.67 and 14,401.41 is: 19,890.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.34 : 29,179.67 = 14,401.41 : x
  2. Step 2: Convert to fraction form
    21,127.34/29,179.67 = 14,401.41/x
  3. Step 3: Cross multiply
    21,127.34x = 29,179.67 × 14,401.41
  4. Step 4: Simplify right side
    21,127.34x = 420,228,319.33
  5. Step 5: Solve for x
    x = 420,228,319.33/21,127.34
  6. Step 6: Final answer
    x = 19,890.27

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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.