Home / 13,912.96-19,200.40-7,625.28

Finding the Fourth Proportional to 13,912.96, 19,200.40 and 7,625.28

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Solution

The fourth proportional to 13,912.96, 19,200.40 and 7,625.28 is: 10,523.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.96 : 19,200.40 = 7,625.28 : x
  2. Step 2: Convert to fraction form
    13,912.96/19,200.40 = 7,625.28/x
  3. Step 3: Cross multiply
    13,912.96x = 19,200.40 × 7,625.28
  4. Step 4: Simplify right side
    13,912.96x = 146,408,426.11
  5. Step 5: Solve for x
    x = 146,408,426.11/13,912.96
  6. Step 6: Final answer
    x = 10,523.17

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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.