Home / 21,401.75-29,534.53-11,970.31

Finding the Fourth Proportional to 21,401.75, 29,534.53 and 11,970.31

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Solution

The fourth proportional to 21,401.75, 29,534.53 and 11,970.31 is: 16,519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.75 : 29,534.53 = 11,970.31 : x
  2. Step 2: Convert to fraction form
    21,401.75/29,534.53 = 11,970.31/x
  3. Step 3: Cross multiply
    21,401.75x = 29,534.53 × 11,970.31
  4. Step 4: Simplify right side
    21,401.75x = 353,537,479.80
  5. Step 5: Solve for x
    x = 353,537,479.80/21,401.75
  6. Step 6: Final answer
    x = 16,519.09

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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.