Home / 12,911.38-17,816.59-7,245.35

Finding the Fourth Proportional to 12,911.38, 17,816.59 and 7,245.35

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Solution

The fourth proportional to 12,911.38, 17,816.59 and 7,245.35 is: 9,997.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.38 : 17,816.59 = 7,245.35 : x
  2. Step 2: Convert to fraction form
    12,911.38/17,816.59 = 7,245.35/x
  3. Step 3: Cross multiply
    12,911.38x = 17,816.59 × 7,245.35
  4. Step 4: Simplify right side
    12,911.38x = 129,087,430.36
  5. Step 5: Solve for x
    x = 129,087,430.36/12,911.38
  6. Step 6: Final answer
    x = 9,997.96

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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.