Home / 13,713.86-18,925.14-7,745.54

Finding the Fourth Proportional to 13,713.86, 18,925.14 and 7,745.54

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Solution

The fourth proportional to 13,713.86, 18,925.14 and 7,745.54 is: 10,688.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,713.86 : 18,925.14 = 7,745.54 : x
  2. Step 2: Convert to fraction form
    13,713.86/18,925.14 = 7,745.54/x
  3. Step 3: Cross multiply
    13,713.86x = 18,925.14 × 7,745.54
  4. Step 4: Simplify right side
    13,713.86x = 146,585,428.88
  5. Step 5: Solve for x
    x = 146,585,428.88/13,713.86
  6. Step 6: Final answer
    x = 10,688.85

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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.