Home / 21,190.35-31,795.85-8,714.13

Finding the Fourth Proportional to 21,190.35, 31,795.85 and 8,714.13

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Solution

The fourth proportional to 21,190.35, 31,795.85 and 8,714.13 is: 13,075.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.35 : 31,795.85 = 8,714.13 : x
  2. Step 2: Convert to fraction form
    21,190.35/31,795.85 = 8,714.13/x
  3. Step 3: Cross multiply
    21,190.35x = 31,795.85 × 8,714.13
  4. Step 4: Simplify right side
    21,190.35x = 277,073,170.36
  5. Step 5: Solve for x
    x = 277,073,170.36/21,190.35
  6. Step 6: Final answer
    x = 13,075.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.