Home / 21,939.06-32,900.40-7,895.28

Finding the Fourth Proportional to 21,939.06, 32,900.40 and 7,895.28

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Solution

The fourth proportional to 21,939.06, 32,900.40 and 7,895.28 is: 11,839.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.06 : 32,900.40 = 7,895.28 : x
  2. Step 2: Convert to fraction form
    21,939.06/32,900.40 = 7,895.28/x
  3. Step 3: Cross multiply
    21,939.06x = 32,900.40 × 7,895.28
  4. Step 4: Simplify right side
    21,939.06x = 259,757,870.11
  5. Step 5: Solve for x
    x = 259,757,870.11/21,939.06
  6. Step 6: Final answer
    x = 11,839.97

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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.