Home / 13,448.20-18,558.42-7,479.52

Finding the Fourth Proportional to 13,448.20, 18,558.42 and 7,479.52

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Solution

The fourth proportional to 13,448.20, 18,558.42 and 7,479.52 is: 10,321.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.20 : 18,558.42 = 7,479.52 : x
  2. Step 2: Convert to fraction form
    13,448.20/18,558.42 = 7,479.52/x
  3. Step 3: Cross multiply
    13,448.20x = 18,558.42 × 7,479.52
  4. Step 4: Simplify right side
    13,448.20x = 138,808,073.56
  5. Step 5: Solve for x
    x = 138,808,073.56/13,448.20
  6. Step 6: Final answer
    x = 10,321.68

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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.