Home / 13,712.85-18,923.75-7,425.22

Finding the Fourth Proportional to 13,712.85, 18,923.75 and 7,425.22

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Solution

The fourth proportional to 13,712.85, 18,923.75 and 7,425.22 is: 10,246.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.85 : 18,923.75 = 7,425.22 : x
  2. Step 2: Convert to fraction form
    13,712.85/18,923.75 = 7,425.22/x
  3. Step 3: Cross multiply
    13,712.85x = 18,923.75 × 7,425.22
  4. Step 4: Simplify right side
    13,712.85x = 140,512,969.85
  5. Step 5: Solve for x
    x = 140,512,969.85/13,712.85
  6. Step 6: Final answer
    x = 10,246.81

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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.