Home / 13,358.58-18,435.12-7,390.66

Finding the Fourth Proportional to 13,358.58, 18,435.12 and 7,390.66

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Solution

The fourth proportional to 13,358.58, 18,435.12 and 7,390.66 is: 10,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.58 : 18,435.12 = 7,390.66 : x
  2. Step 2: Convert to fraction form
    13,358.58/18,435.12 = 7,390.66/x
  3. Step 3: Cross multiply
    13,358.58x = 18,435.12 × 7,390.66
  4. Step 4: Simplify right side
    13,358.58x = 136,247,703.98
  5. Step 5: Solve for x
    x = 136,247,703.98/13,358.58
  6. Step 6: Final answer
    x = 10,199.27

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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.