Home / 15,839.37-21,857.72-8,765.64

Finding the Fourth Proportional to 15,839.37, 21,857.72 and 8,765.64

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Solution

The fourth proportional to 15,839.37, 21,857.72 and 8,765.64 is: 12,096.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.37 : 21,857.72 = 8,765.64 : x
  2. Step 2: Convert to fraction form
    15,839.37/21,857.72 = 8,765.64/x
  3. Step 3: Cross multiply
    15,839.37x = 21,857.72 × 8,765.64
  4. Step 4: Simplify right side
    15,839.37x = 191,596,860.91
  5. Step 5: Solve for x
    x = 191,596,860.91/15,839.37
  6. Step 6: Final answer
    x = 12,096.24

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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.