Home / 13,192.72-18,205.88-7,224.28

Finding the Fourth Proportional to 13,192.72, 18,205.88 and 7,224.28

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Solution

The fourth proportional to 13,192.72, 18,205.88 and 7,224.28 is: 9,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,192.72 : 18,205.88 = 7,224.28 : x
  2. Step 2: Convert to fraction form
    13,192.72/18,205.88 = 7,224.28/x
  3. Step 3: Cross multiply
    13,192.72x = 18,205.88 × 7,224.28
  4. Step 4: Simplify right side
    13,192.72x = 131,524,374.77
  5. Step 5: Solve for x
    x = 131,524,374.77/13,192.72
  6. Step 6: Final answer
    x = 9,969.47

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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.