Home / 13,620.24-18,795.30-7,955.28

Finding the Fourth Proportional to 13,620.24, 18,795.30 and 7,955.28

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Solution

The fourth proportional to 13,620.24, 18,795.30 and 7,955.28 is: 10,977.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.24 : 18,795.30 = 7,955.28 : x
  2. Step 2: Convert to fraction form
    13,620.24/18,795.30 = 7,955.28/x
  3. Step 3: Cross multiply
    13,620.24x = 18,795.30 × 7,955.28
  4. Step 4: Simplify right side
    13,620.24x = 149,521,874.18
  5. Step 5: Solve for x
    x = 149,521,874.18/13,620.24
  6. Step 6: Final answer
    x = 10,977.92

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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.