Home / 21,771.98-30,044.48-12,340.34

Finding the Fourth Proportional to 21,771.98, 30,044.48 and 12,340.34

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Solution

The fourth proportional to 21,771.98, 30,044.48 and 12,340.34 is: 17,029.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.98 : 30,044.48 = 12,340.34 : x
  2. Step 2: Convert to fraction form
    21,771.98/30,044.48 = 12,340.34/x
  3. Step 3: Cross multiply
    21,771.98x = 30,044.48 × 12,340.34
  4. Step 4: Simplify right side
    21,771.98x = 370,758,886.40
  5. Step 5: Solve for x
    x = 370,758,886.40/21,771.98
  6. Step 6: Final answer
    x = 17,029.18

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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.