Home / 13,208.48-18,227.60-7,240.08

Finding the Fourth Proportional to 13,208.48, 18,227.60 and 7,240.08

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Solution

The fourth proportional to 13,208.48, 18,227.60 and 7,240.08 is: 9,991.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.48 : 18,227.60 = 7,240.08 : x
  2. Step 2: Convert to fraction form
    13,208.48/18,227.60 = 7,240.08/x
  3. Step 3: Cross multiply
    13,208.48x = 18,227.60 × 7,240.08
  4. Step 4: Simplify right side
    13,208.48x = 131,969,282.21
  5. Step 5: Solve for x
    x = 131,969,282.21/13,208.48
  6. Step 6: Final answer
    x = 9,991.25

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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.