Home / 21,857.58-32,780.70-6,271.56

Finding the Fourth Proportional to 21,857.58, 32,780.70 and 6,271.56

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Solution

The fourth proportional to 21,857.58, 32,780.70 and 6,271.56 is: 9,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,857.58 : 32,780.70 = 6,271.56 : x
  2. Step 2: Convert to fraction form
    21,857.58/32,780.70 = 6,271.56/x
  3. Step 3: Cross multiply
    21,857.58x = 32,780.70 × 6,271.56
  4. Step 4: Simplify right side
    21,857.58x = 205,586,126.89
  5. Step 5: Solve for x
    x = 205,586,126.89/21,857.58
  6. Step 6: Final answer
    x = 9,405.71

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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.