Home / 15,839.46-21,858.13-8,765.90

Finding the Fourth Proportional to 15,839.46, 21,858.13 and 8,765.90

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Solution

The fourth proportional to 15,839.46, 21,858.13 and 8,765.90 is: 12,096.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.46 : 21,858.13 = 8,765.90 : x
  2. Step 2: Convert to fraction form
    15,839.46/21,858.13 = 8,765.90/x
  3. Step 3: Cross multiply
    15,839.46x = 21,858.13 × 8,765.90
  4. Step 4: Simplify right side
    15,839.46x = 191,606,181.77
  5. Step 5: Solve for x
    x = 191,606,181.77/15,839.46
  6. Step 6: Final answer
    x = 12,096.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.