Home / 21,570.55-32,355.84-6,780.76

Finding the Fourth Proportional to 21,570.55, 32,355.84 and 6,780.76

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Solution

The fourth proportional to 21,570.55, 32,355.84 and 6,780.76 is: 10,171.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,570.55 : 32,355.84 = 6,780.76 : x
  2. Step 2: Convert to fraction form
    21,570.55/32,355.84 = 6,780.76/x
  3. Step 3: Cross multiply
    21,570.55x = 32,355.84 × 6,780.76
  4. Step 4: Simplify right side
    21,570.55x = 219,397,185.64
  5. Step 5: Solve for x
    x = 219,397,185.64/21,570.55
  6. Step 6: Final answer
    x = 10,171.14

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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.