Home / 18,742.24-25,885.56-12,763.54

Finding the Fourth Proportional to 18,742.24, 25,885.56 and 12,763.54

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Solution

The fourth proportional to 18,742.24, 25,885.56 and 12,763.54 is: 17,628.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.24 : 25,885.56 = 12,763.54 : x
  2. Step 2: Convert to fraction form
    18,742.24/25,885.56 = 12,763.54/x
  3. Step 3: Cross multiply
    18,742.24x = 25,885.56 × 12,763.54
  4. Step 4: Simplify right side
    18,742.24x = 330,391,380.48
  5. Step 5: Solve for x
    x = 330,391,380.48/18,742.24
  6. Step 6: Final answer
    x = 17,628.17

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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.