Home / 12,869.19-17,758.66-7,202.99

Finding the Fourth Proportional to 12,869.19, 17,758.66 and 7,202.99

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Solution

The fourth proportional to 12,869.19, 17,758.66 and 7,202.99 is: 9,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.19 : 17,758.66 = 7,202.99 : x
  2. Step 2: Convert to fraction form
    12,869.19/17,758.66 = 7,202.99/x
  3. Step 3: Cross multiply
    12,869.19x = 17,758.66 × 7,202.99
  4. Step 4: Simplify right side
    12,869.19x = 127,915,361.60
  5. Step 5: Solve for x
    x = 127,915,361.60/12,869.19
  6. Step 6: Final answer
    x = 9,939.66

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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.