Home / 13,225.48-18,251.06-7,639.56

Finding the Fourth Proportional to 13,225.48, 18,251.06 and 7,639.56

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Solution

The fourth proportional to 13,225.48, 18,251.06 and 7,639.56 is: 10,542.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,225.48 : 18,251.06 = 7,639.56 : x
  2. Step 2: Convert to fraction form
    13,225.48/18,251.06 = 7,639.56/x
  3. Step 3: Cross multiply
    13,225.48x = 18,251.06 × 7,639.56
  4. Step 4: Simplify right side
    13,225.48x = 139,430,067.93
  5. Step 5: Solve for x
    x = 139,430,067.93/13,225.48
  6. Step 6: Final answer
    x = 10,542.53

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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.