Home / 11,655.36-17,487.36-5,418.72

Finding the Fourth Proportional to 11,655.36, 17,487.36 and 5,418.72

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Solution

The fourth proportional to 11,655.36, 17,487.36 and 5,418.72 is: 8,130.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,655.36 : 17,487.36 = 5,418.72 : x
  2. Step 2: Convert to fraction form
    11,655.36/17,487.36 = 5,418.72/x
  3. Step 3: Cross multiply
    11,655.36x = 17,487.36 × 5,418.72
  4. Step 4: Simplify right side
    11,655.36x = 94,759,107.38
  5. Step 5: Solve for x
    x = 94,759,107.38/11,655.36
  6. Step 6: Final answer
    x = 8,130.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.