Home / 13,383.14-18,468.85-7,415.36

Finding the Fourth Proportional to 13,383.14, 18,468.85 and 7,415.36

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Solution

The fourth proportional to 13,383.14, 18,468.85 and 7,415.36 is: 10,233.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.14 : 18,468.85 = 7,415.36 : x
  2. Step 2: Convert to fraction form
    13,383.14/18,468.85 = 7,415.36/x
  3. Step 3: Cross multiply
    13,383.14x = 18,468.85 × 7,415.36
  4. Step 4: Simplify right side
    13,383.14x = 136,953,060.65
  5. Step 5: Solve for x
    x = 136,953,060.65/13,383.14
  6. Step 6: Final answer
    x = 10,233.26

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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.