Home / 23,109.12-31,892.40-13,682.88

Finding the Fourth Proportional to 23,109.12, 31,892.40 and 13,682.88

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Solution

The fourth proportional to 23,109.12, 31,892.40 and 13,682.88 is: 18,883.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,109.12 : 31,892.40 = 13,682.88 : x
  2. Step 2: Convert to fraction form
    23,109.12/31,892.40 = 13,682.88/x
  3. Step 3: Cross multiply
    23,109.12x = 31,892.40 × 13,682.88
  4. Step 4: Simplify right side
    23,109.12x = 436,379,882.11
  5. Step 5: Solve for x
    x = 436,379,882.11/23,109.12
  6. Step 6: Final answer
    x = 18,883.45

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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.