Home / 15,485.64-21,372.10-9,198.04

Finding the Fourth Proportional to 15,485.64, 21,372.10 and 9,198.04

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Solution

The fourth proportional to 15,485.64, 21,372.10 and 9,198.04 is: 12,694.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.64 : 21,372.10 = 9,198.04 : x
  2. Step 2: Convert to fraction form
    15,485.64/21,372.10 = 9,198.04/x
  3. Step 3: Cross multiply
    15,485.64x = 21,372.10 × 9,198.04
  4. Step 4: Simplify right side
    15,485.64x = 196,581,430.68
  5. Step 5: Solve for x
    x = 196,581,430.68/15,485.64
  6. Step 6: Final answer
    x = 12,694.43

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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.