Home / 13,358.82-18,435.69-7,309.47

Finding the Fourth Proportional to 13,358.82, 18,435.69 and 7,309.47

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Solution

The fourth proportional to 13,358.82, 18,435.69 and 7,309.47 is: 10,087.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.82 : 18,435.69 = 7,309.47 : x
  2. Step 2: Convert to fraction form
    13,358.82/18,435.69 = 7,309.47/x
  3. Step 3: Cross multiply
    13,358.82x = 18,435.69 × 7,309.47
  4. Step 4: Simplify right side
    13,358.82x = 134,755,122.98
  5. Step 5: Solve for x
    x = 134,755,122.98/13,358.82
  6. Step 6: Final answer
    x = 10,087.35

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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.