Home / 13,910.08-19,190.28-7,940.56

Finding the Fourth Proportional to 13,910.08, 19,190.28 and 7,940.56

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Solution

The fourth proportional to 13,910.08, 19,190.28 and 7,940.56 is: 10,954.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.08 : 19,190.28 = 7,940.56 : x
  2. Step 2: Convert to fraction form
    13,910.08/19,190.28 = 7,940.56/x
  3. Step 3: Cross multiply
    13,910.08x = 19,190.28 × 7,940.56
  4. Step 4: Simplify right side
    13,910.08x = 152,381,569.76
  5. Step 5: Solve for x
    x = 152,381,569.76/13,910.08
  6. Step 6: Final answer
    x = 10,954.76

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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.