Home / 13,712.87-18,923.78-7,425.25

Finding the Fourth Proportional to 13,712.87, 18,923.78 and 7,425.25

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Solution

The fourth proportional to 13,712.87, 18,923.78 and 7,425.25 is: 10,246.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.87 : 18,923.78 = 7,425.25 : x
  2. Step 2: Convert to fraction form
    13,712.87/18,923.78 = 7,425.25/x
  3. Step 3: Cross multiply
    13,712.87x = 18,923.78 × 7,425.25
  4. Step 4: Simplify right side
    13,712.87x = 140,513,768.70
  5. Step 5: Solve for x
    x = 140,513,768.70/13,712.87
  6. Step 6: Final answer
    x = 10,246.85

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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.