Home / 12,453.12-17,185.50-6,864.12

Finding the Fourth Proportional to 12,453.12, 17,185.50 and 6,864.12

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Solution

The fourth proportional to 12,453.12, 17,185.50 and 6,864.12 is: 9,472.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.12 : 17,185.50 = 6,864.12 : x
  2. Step 2: Convert to fraction form
    12,453.12/17,185.50 = 6,864.12/x
  3. Step 3: Cross multiply
    12,453.12x = 17,185.50 × 6,864.12
  4. Step 4: Simplify right side
    12,453.12x = 117,963,334.26
  5. Step 5: Solve for x
    x = 117,963,334.26/12,453.12
  6. Step 6: Final answer
    x = 9,472.59

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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.