Home / 15,839.43-21,858.10-8,765.85

Finding the Fourth Proportional to 15,839.43, 21,858.10 and 8,765.85

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Solution

The fourth proportional to 15,839.43, 21,858.10 and 8,765.85 is: 12,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.43 : 21,858.10 = 8,765.85 : x
  2. Step 2: Convert to fraction form
    15,839.43/21,858.10 = 8,765.85/x
  3. Step 3: Cross multiply
    15,839.43x = 21,858.10 × 8,765.85
  4. Step 4: Simplify right side
    15,839.43x = 191,604,825.89
  5. Step 5: Solve for x
    x = 191,604,825.89/15,839.43
  6. Step 6: Final answer
    x = 12,096.70

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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.