Home / 12,948.36-17,868.44-7,912.56

Finding the Fourth Proportional to 12,948.36, 17,868.44 and 7,912.56

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Solution

The fourth proportional to 12,948.36, 17,868.44 and 7,912.56 is: 10,919.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,948.36 : 17,868.44 = 7,912.56 : x
  2. Step 2: Convert to fraction form
    12,948.36/17,868.44 = 7,912.56/x
  3. Step 3: Cross multiply
    12,948.36x = 17,868.44 × 7,912.56
  4. Step 4: Simplify right side
    12,948.36x = 141,385,084.50
  5. Step 5: Solve for x
    x = 141,385,084.50/12,948.36
  6. Step 6: Final answer
    x = 10,919.15

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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.