Home / 13,228.56-19,816.38-7,960.66

Finding the Fourth Proportional to 13,228.56, 19,816.38 and 7,960.66

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Solution

The fourth proportional to 13,228.56, 19,816.38 and 7,960.66 is: 11,925.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.56 : 19,816.38 = 7,960.66 : x
  2. Step 2: Convert to fraction form
    13,228.56/19,816.38 = 7,960.66/x
  3. Step 3: Cross multiply
    13,228.56x = 19,816.38 × 7,960.66
  4. Step 4: Simplify right side
    13,228.56x = 157,751,463.61
  5. Step 5: Solve for x
    x = 157,751,463.61/13,228.56
  6. Step 6: Final answer
    x = 11,925.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.