Home / 13,448.11-18,558.18-7,479.04

Finding the Fourth Proportional to 13,448.11, 18,558.18 and 7,479.04

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Solution

The fourth proportional to 13,448.11, 18,558.18 and 7,479.04 is: 10,320.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.11 : 18,558.18 = 7,479.04 : x
  2. Step 2: Convert to fraction form
    13,448.11/18,558.18 = 7,479.04/x
  3. Step 3: Cross multiply
    13,448.11x = 18,558.18 × 7,479.04
  4. Step 4: Simplify right side
    13,448.11x = 138,797,370.55
  5. Step 5: Solve for x
    x = 138,797,370.55/13,448.11
  6. Step 6: Final answer
    x = 10,320.96

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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.