Home / 13,919.31-19,207.94-7,630.47

Finding the Fourth Proportional to 13,919.31, 19,207.94 and 7,630.47

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Solution

The fourth proportional to 13,919.31, 19,207.94 and 7,630.47 is: 10,529.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.31 : 19,207.94 = 7,630.47 : x
  2. Step 2: Convert to fraction form
    13,919.31/19,207.94 = 7,630.47/x
  3. Step 3: Cross multiply
    13,919.31x = 19,207.94 × 7,630.47
  4. Step 4: Simplify right side
    13,919.31x = 146,565,571.78
  5. Step 5: Solve for x
    x = 146,565,571.78/13,919.31
  6. Step 6: Final answer
    x = 10,529.66

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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.