Home / 13,358.88-18,435.58-7,390.66

Finding the Fourth Proportional to 13,358.88, 18,435.58 and 7,390.66

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Solution

The fourth proportional to 13,358.88, 18,435.58 and 7,390.66 is: 10,199.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.88 : 18,435.58 = 7,390.66 : x
  2. Step 2: Convert to fraction form
    13,358.88/18,435.58 = 7,390.66/x
  3. Step 3: Cross multiply
    13,358.88x = 18,435.58 × 7,390.66
  4. Step 4: Simplify right side
    13,358.88x = 136,251,103.68
  5. Step 5: Solve for x
    x = 136,251,103.68/13,358.88
  6. Step 6: Final answer
    x = 10,199.29

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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.