Home / 13,208.45-18,227.55-7,240.10

Finding the Fourth Proportional to 13,208.45, 18,227.55 and 7,240.10

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Solution

The fourth proportional to 13,208.45, 18,227.55 and 7,240.10 is: 9,991.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.45 : 18,227.55 = 7,240.10 : x
  2. Step 2: Convert to fraction form
    13,208.45/18,227.55 = 7,240.10/x
  3. Step 3: Cross multiply
    13,208.45x = 18,227.55 × 7,240.10
  4. Step 4: Simplify right side
    13,208.45x = 131,969,330.32
  5. Step 5: Solve for x
    x = 131,969,330.32/13,208.45
  6. Step 6: Final answer
    x = 9,991.28

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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.