Home / 13,208.64-18,228.58-7,240.56

Finding the Fourth Proportional to 13,208.64, 18,228.58 and 7,240.56

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Solution

The fourth proportional to 13,208.64, 18,228.58 and 7,240.56 is: 9,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.64 : 18,228.58 = 7,240.56 : x
  2. Step 2: Convert to fraction form
    13,208.64/18,228.58 = 7,240.56/x
  3. Step 3: Cross multiply
    13,208.64x = 18,228.58 × 7,240.56
  4. Step 4: Simplify right side
    13,208.64x = 131,985,127.20
  5. Step 5: Solve for x
    x = 131,985,127.20/13,208.64
  6. Step 6: Final answer
    x = 9,992.33

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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.