Home / 19,812.75-27,342.81-11,429.25

Finding the Fourth Proportional to 19,812.75, 27,342.81 and 11,429.25

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Solution

The fourth proportional to 19,812.75, 27,342.81 and 11,429.25 is: 15,773.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.75 : 27,342.81 = 11,429.25 : x
  2. Step 2: Convert to fraction form
    19,812.75/27,342.81 = 11,429.25/x
  3. Step 3: Cross multiply
    19,812.75x = 27,342.81 × 11,429.25
  4. Step 4: Simplify right side
    19,812.75x = 312,507,811.19
  5. Step 5: Solve for x
    x = 312,507,811.19/19,812.75
  6. Step 6: Final answer
    x = 15,773.07

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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.