Home / 21,570.05-32,355.09-6,780.26

Finding the Fourth Proportional to 21,570.05, 32,355.09 and 6,780.26

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Solution

The fourth proportional to 21,570.05, 32,355.09 and 6,780.26 is: 10,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,570.05 : 32,355.09 = 6,780.26 : x
  2. Step 2: Convert to fraction form
    21,570.05/32,355.09 = 6,780.26/x
  3. Step 3: Cross multiply
    21,570.05x = 32,355.09 × 6,780.26
  4. Step 4: Simplify right side
    21,570.05x = 219,375,760.75
  5. Step 5: Solve for x
    x = 219,375,760.75/21,570.05
  6. Step 6: Final answer
    x = 10,170.39

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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.